P2083 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1

P2083 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1 is a generic OBD-II diagnostic trouble code indicating that the Engine Control Module (ECM/PCM) has detected an intermittent electrical problem in the Exhaust Gas Temperature (EGT) sensor circuit for Bank 2 Sensor 1.

In simple terms, the engine computer is receiving an exhaust-temperature signal that occasionally drops out, becomes unstable, or changes in a way that is not electrically plausible.

The EGT sensor measures exhaust temperature and sends this information to the ECM. Depending on the vehicle, EGT sensors can be used for:

• Catalytic-converter protection

• Turbocharger protection

• Diesel particulate filter (DPF) regeneration

• Gasoline particulate filter (GPF) management

• Exhaust aftertreatment control

• Emissions management

• Engine protection

When the signal from Bank 2 Sensor 1 becomes intermittent, the ECM may store P2083 and illuminate the Check Engine Light.

The exact physical location of Bank 2 Sensor 1 depends on the vehicle's exhaust configuration. This is particularly important on turbocharged diesel engines, which can have several EGT sensors positioned around the turbocharger, oxidation catalyst, DPF, and other aftertreatment components.

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What Does P2083 Mean?

The code description can be divided into four parts.

Exhaust Gas Temperature Sensor

An Exhaust Gas Temperature sensor measures the temperature of exhaust gases.

Many EGT sensors use a temperature-sensitive electrical element whose resistance changes as temperature changes. The ECM monitors this electrical characteristic and calculates the approximate exhaust temperature.

The resulting information can be used to determine whether exhaust temperatures are appropriate for the current operating conditions.

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Circuit Intermittent

The word "intermittent" is particularly important.

It means the ECM is detecting a problem that comes and goes rather than a fault that remains continuously present.

For example, the sensor may operate normally when the engine is cold but lose its signal after the exhaust system becomes hot.

The fault may occur because of:

• Loose connector

• Poor terminal contact

• Broken wire

• Heat-damaged wiring

• Corroded terminals

• Vibration

• Internal sensor failure

• Wiring that moves with the engine or exhaust system

An intermittent fault can therefore be difficult to reproduce during a simple visual inspection.

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Bank 2

Bank 2 refers to the side of a V-type engine that does not contain cylinder number one.

Therefore:

• Bank 1 = side containing cylinder #1

• Bank 2 = opposite side

Inline engines generally have only one cylinder bank and therefore do not normally use Bank 2 terminology.

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Sensor 1

Sensor 1 identifies the EGT sensor position according to the manufacturer's exhaust-system configuration.

Unlike conventional upstream/downstream oxygen-sensor terminology, EGT sensor numbering can vary considerably between manufacturers.

On some vehicles, Bank 2 Sensor 1 may be positioned relatively close to the engine or turbocharger. On others, the sensor designation may correspond to a particular position in the aftertreatment system.

Therefore, do not assume that Bank 2 Sensor 1 is in the same physical location on every vehicle.

Always verify the location using the vehicle-specific service information.

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How Does an EGT Sensor Work?

A typical EGT monitoring system operates as follows:

1. Exhaust gases heat the EGT sensor.

2. The sensor's electrical characteristics change with temperature.

3. The ECM monitors the sensor circuit.

4. The ECM converts the electrical signal into an estimated exhaust temperature.

5. The ECM compares the reading with expected operating conditions.

6. The ECM may compare the reading with other temperature sensors.

7. The temperature information is used for engine or emissions management.

8. If the signal intermittently becomes implausible or electrically abnormal, P2083 may be stored.

EGT sensors operate in a particularly harsh environment.

They can be exposed to:

• Very high temperatures

• Rapid thermal cycling

• Exhaust pressure

• Vibration

• Soot

• Moisture

• Corrosion

• Thermal expansion and contraction

These conditions can damage both the sensor and the wiring surrounding it.

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Symptoms of P2083

Symptoms vary depending on the vehicle and the role of the EGT sensor.

Check Engine Light

The most common symptom is the Check Engine Light.

Because P2083 is an intermittent code, the light may appear only under certain operating conditions.

In some cases, the code may be stored as pending before the Check Engine Light becomes continuously illuminated.

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Intermittent EGT Readings

A scan tool may show:

• Sudden temperature drops

• Sudden temperature increases

• Temperature spikes

• A fixed reading

• Signal loss

• Implausible temperature changes

The reading may return to normal after the wiring or sensor cools down or stops vibrating.

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Reduced Engine Power

Some vehicles may activate a protective strategy when the ECM cannot reliably determine exhaust temperature.

Possible symptoms include:

• Reduced engine power

• Reduced turbo boost

• Slower acceleration

• Limited engine speed

• Limp mode

This is not present on every vehicle.

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DPF Regeneration Problems

On diesel vehicles, EGT sensors can be important for DPF regeneration.

An intermittent signal can interfere with the ECM's ability to determine whether the required exhaust temperature has been reached.

Possible consequences include:

• Regeneration being delayed

• Regeneration being interrupted

• Regeneration failing

• Increasing DPF soot loading

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Turbocharger Protection Problems

Turbocharged engines may use EGT information to protect the turbocharger from excessive heat.

If the ECM receives unreliable temperature information, it may reduce boost or activate a protective strategy.

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Poor Fuel Economy

Depending on the vehicle's control strategy, incorrect exhaust-temperature information may affect fuel-management or emissions functions and contribute to increased fuel consumption.

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Increased Emissions

An EGT sensor problem can interfere with emissions-control strategies.

A vehicle with an unresolved emissions-related fault may also fail an applicable inspection or emissions test.

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No Noticeable Driving Symptoms

It is possible to have P2083 with no obvious drivability problem.

The only symptom may be a Check Engine Light.

This is especially common when the intermittent fault occurs only briefly.

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Common Causes of P2083

Damaged EGT Sensor Wiring

Because P2083 specifically identifies an intermittent circuit problem, wiring should receive particular attention.

The harness may be:

• Melted

• Brittle

• Chafed

• Partially broken

• Stretched

• Pinched

• Rubbing against another component

• Too close to the exhaust

A partially broken wire can make good electrical contact when stationary but lose contact when the engine or exhaust system moves.

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Heat-Damaged Wiring

EGT sensor wiring is often routed near extremely hot exhaust components.

Repeated exposure to high temperature can make insulation brittle or cause it to melt.

The conductor may then intermittently contact:

• Ground

• Another circuit

• A damaged connector

• A hot exhaust component

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Loose Connector

A connector that is not completely secured can intermittently interrupt the sensor signal.

The problem may become more noticeable because of:

• Engine vibration

• Exhaust vibration

• Rough roads

• Thermal expansion

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Poor Terminal Contact

A terminal can appear visually normal while having insufficient contact tension.

This can produce:

• Intermittent open circuits

• High resistance

• Signal fluctuations

• Temperature readings that suddenly become implausible

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Corroded Connector or Terminals

Moisture and contamination can cause corrosion.

Possible sources include:

• Water intrusion

• Road spray

• Road salt

• Exhaust condensation

• Damaged connector seals

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Faulty EGT Sensor

The EGT sensor itself can develop an internal intermittent fault.

Possible problems include:

• Internal resistance changes

• Signal dropouts

• Temperature drift

• Internal connection failure

• Slow or inconsistent response

A sensor can function correctly during a cold test and fail after reaching operating temperature.

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Vibration-Related Failure

Vibration from the engine or exhaust system can cause an already weakened wire or connector terminal to intermittently lose contact.

The fault may appear only:

• At a particular RPM

• During acceleration

• Under heavy load

• On rough roads

• During engine movement

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Water or Moisture Intrusion

Water inside the sensor connector can create intermittent electrical problems.

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Poor Previous Wiring Repair

A previous repair can become the source of an intermittent fault if it used:

• Incorrect wire

• Poor-quality splice

• Loose crimp

• Incorrect connector

• Improper routing

• Inadequate heat protection

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Exhaust System Damage

Damage to the exhaust system can physically stress the sensor or wiring.

Possible locations include:

• Exhaust manifold

• Turbocharger

• Exhaust pipe

• Catalytic converter

• DPF

• Flex pipe

• Aftertreatment components

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Sensor Installation Problems

An EGT sensor that is loose, incorrectly installed, damaged during installation, or incorrectly positioned may produce unreliable readings.

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Excessive Exhaust Temperature

Although P2083 identifies an intermittent circuit fault, the underlying engine condition should not be ignored.

Excessive exhaust temperature can damage an EGT sensor or its wiring.

Possible causes include:

• Engine misfire

• Incorrect air-fuel mixture

• Fuel injector problems

• Incorrect ignition timing

• Incorrect injection timing

• Turbocharger problems

• Exhaust restriction

• DPF regeneration problems

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Engine Misfire

A misfire can send unburned fuel into the exhaust.

This can cause exhaust temperatures to rise substantially and may damage:

• EGT sensor

• Catalytic converter

• DPF

• Turbocharger

• Other exhaust components

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Fuel Injector Problems

A leaking or incorrectly operating injector can alter combustion and exhaust temperature.

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Exhaust Restriction

A restricted:

• Catalytic converter

• DPF

• GPF

• Exhaust pipe

can change exhaust pressure and temperature.

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DPF Problems

On diesel vehicles, excessive DPF loading or regeneration problems can create abnormal exhaust temperatures.

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Turbocharger Problems

Turbocharger or boost-control faults can alter combustion and exhaust conditions.

Possible causes include:

• Wastegate problems

• Variable-geometry turbo problems

• Boost-control faults

• Turbocharger damage

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ECM/PCM Problem

An ECM/PCM input-circuit problem is possible, but it is generally less common than a sensor, connector, or wiring problem.

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Software or Calibration Problem

Some vehicles may have manufacturer-specific software issues affecting EGT sensor monitoring.

An ECM software update may be available.

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Vehicles Commonly Affected by P2083

P2083 can occur on vehicles equipped with multiple EGT sensors and a multi-bank exhaust or aftertreatment system.

Examples include:

• Ford F-150

• Ford Super Duty

• Ford Explorer

• Ford Expedition

• Chevrolet Silverado

• Chevrolet Tahoe

• Chevrolet Suburban

• GMC Sierra

• GMC Yukon

• Ram 1500

• Ram 2500

• Ram 3500

• Jeep Grand Cherokee

• Jeep Wrangler

• BMW X5

• BMW X6

• Mercedes-Benz GLE

• Mercedes-Benz G-Class

• Audi Q7

• Volkswagen Touareg

• Porsche Cayenne

• Land Rover Discovery

• Range Rover

This list is not exhaustive.

The actual application of P2083 depends on the manufacturer, engine, exhaust layout, emissions system, and EGT sensor configuration.

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How Is P2083 Diagnosed?

Because P2083 is an intermittent circuit code, diagnosis should focus on finding the condition that causes the EGT signal to become unstable or disappear.

The key diagnostic questions are:

Is the EGT sensor failing internally?

Is the wiring or connector intermittently losing electrical contact?

Is the exhaust actually reaching an abnormal temperature that is causing the sensor or wiring to malfunction?

A proper diagnosis should address all three possibilities.

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Step 1: Scan for Additional Trouble Codes

Use a suitable diagnostic scan tool to retrieve:

• Stored codes

• Pending codes

• History codes

• Manufacturer-specific codes

Look for related codes involving:

• EGT sensors

• DPF

• Catalytic converter

• Exhaust pressure

• Turbocharger

• Fuel system

• Misfires

• Air-fuel mixture

• Aftertreatment

Related codes may reveal the underlying cause.

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Step 2: Check Freeze-Frame Data

Record the operating conditions when P2083 was stored.

Important parameters may include:

• Engine RPM

• Engine load

• Vehicle speed

• Coolant temperature

• Intake air temperature

• Battery voltage

• EGT temperature

• DPF status

• Regeneration status

Determine whether the fault occurred during:

• Cold start

• Warm-up

• Cruising

• Acceleration

• Heavy load

• Deceleration

• DPF regeneration

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Step 3: Identify Bank 2 Sensor 1

Use manufacturer-specific service information to locate the sensor.

Verify:

• Exact physical location

• Connector

• Wiring

• Circuit designation

• Sensor type

Do not assume that Bank 2 Sensor 1 has the same location on every vehicle.

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Step 4: Monitor Live EGT Data

Use the scan tool to monitor Bank 2 Sensor 1.

Look for:

• Sudden temperature drops

• Sudden spikes

• Signal interruptions

• Implausible values

• Fixed readings

• Unstable temperature changes

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Step 5: Compare Other EGT Sensors

If multiple EGT sensors are available, compare their readings under similar operating conditions.

A major unexplained difference can help identify the affected sensor or circuit.

However, different sensors are installed at different exhaust locations and therefore should not necessarily show the same temperature.

Use manufacturer specifications when determining whether a difference is abnormal.

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Step 6: Inspect the EGT Sensor

Inspect Bank 2 Sensor 1 for:

• Physical damage

• Burn marks

• Cracks

• Corrosion

• Contamination

• Loose installation

• Damaged sensor wiring

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Step 7: Inspect the Connector

Check for:

• Corrosion

• Bent pins

• Loose terminals

• Spread terminals

• Backed-out terminals

• Water intrusion

• Melted housing

• Broken locking tabs

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Step 8: Inspect the Wiring Harness

Trace the sensor wiring toward the ECM.

Look for:

• Melted insulation

• Brittle insulation

• Chafing

• Broken conductors

• Pinched wires

• Loose harness clips

• Wiring touching the exhaust

• Poor previous repairs

Pay particular attention to areas around:

• Exhaust manifolds

• Turbochargers

• Catalytic converters

• DPFs

• Exhaust pipes

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Step 9: Perform a Wiggle Test

Monitor the EGT sensor reading while carefully moving the harness and connector.

If the temperature reading suddenly changes without a corresponding change in exhaust conditions, an intermittent wiring or terminal problem is likely.

This test is particularly useful for P2083.

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Step 10: Check Sensor Resistance

Depending on the sensor design, measure its resistance at the specified temperature.

Compare the result with manufacturer specifications.

There is no single universal resistance value for every EGT sensor.

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Step 11: Check Circuit Continuity

Test the sensor circuit for:

• Open circuits

• High resistance

• Short circuits

• Intermittent connections

Use the vehicle-specific wiring diagram.

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Step 12: Check Reference or Supply Voltage

Depending on the EGT sensor design, verify the expected reference or supply voltage.

Do not assume that every EGT sensor uses the same circuit arrangement.

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Step 13: Check Ground or Return Circuit

Where applicable, verify:

• Ground/return continuity

• Voltage drop

• Circuit integrity

• Connector condition

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Step 14: Check the Signal Circuit

Monitor the EGT signal while the exhaust temperature changes.

The signal should change smoothly and consistently.

A sudden electrical change without a corresponding physical temperature change can indicate a sensor or wiring fault.

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Step 15: Check Cold-Start Plausibility

When the engine is completely cold, compare the Bank 2 Sensor 1 reading with:

• Ambient temperature

• Intake air temperature

• Coolant temperature

• Other relevant temperature sensors

A major unexplained discrepancy can indicate a sensor or circuit problem.

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Step 16: Test for Heat-Related Failure

An intermittent EGT fault may only appear after the exhaust system becomes hot.

Compare sensor operation:

• Cold

• During warm-up

• At operating temperature

• After heat soak

If the signal becomes abnormal only when hot, investigate both the EGT sensor and the wiring around the exhaust.

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Step 17: Check for Excessive Exhaust Temperature

If the electrical circuit appears healthy, determine whether the exhaust temperature is actually too high.

Investigate:

• Misfires

• Fuel injectors

• Fuel pressure

• Air-fuel mixture

• Ignition timing

• Injection timing

• Turbocharger operation

• Exhaust restriction

• DPF regeneration

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Step 18: Check DPF and Aftertreatment

On diesel vehicles, inspect:

• DPF loading

• Regeneration status

• Regeneration history

• Differential pressure

• EGT sensor values

• Related aftertreatment codes

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Step 19: Inspect the Exhaust System

Check for:

• Exhaust leaks

• Damaged pipes

• Restricted catalytic converter

• Restricted DPF

• Damaged GPF

• Turbocharger-related exhaust problems

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Step 20: Check Manufacturer Service Information

Look for:

• Technical Service Bulletins

• Known EGT sensor failures

• Wiring harness problems

• Connector issues

• Heat-related faults

• ECM software updates

• Calibration updates

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Step 21: Perform Required Adaptation or Relearn

Some vehicles may require an adaptation reset or relearn after replacing an EGT sensor.

Follow the manufacturer's service procedure.

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How to Fix P2083

The correct repair depends on what caused the intermittent fault.

Repair Damaged Wiring

Repair or replace wiring damaged by:

• Heat

• Chafing

• Vibration

• Corrosion

• Broken conductors

• Poor previous repairs

The repaired harness should be routed and secured correctly so it cannot contact hot exhaust components.

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Repair or Replace the Connector

If the connector has:

• Corroded terminals

• Loose terminals

• Poor terminal tension

• Melted housing

• Water intrusion

• Broken locking hardware

repair or replace the affected components.

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Replace the Faulty EGT Sensor

If testing confirms that Bank 2 Sensor 1 is defective, replace it with the correct sensor specified for the vehicle.

The replacement sensor must have the correct electrical characteristics and physical configuration.

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Repair Exhaust Leaks

Repair exhaust leaks that affect the sensor or contribute to abnormal exhaust conditions.

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Correct Excessive Exhaust Temperature

If the exhaust is genuinely too hot, repair the underlying cause.

Possible causes include:

• Engine misfire

• Fuel injector failure

• Incorrect fuel pressure

• Rich or lean operation

• Ignition timing problems

• Injection timing problems

• Turbocharger faults

• Exhaust restriction

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Repair DPF or Aftertreatment Problems

On applicable diesel vehicles, repair problems involving:

• DPF regeneration

• Excessive DPF loading

• Differential pressure

• Exhaust temperature management

• Aftertreatment components

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Repair Turbocharger Problems

If a turbocharger or boost-control fault is responsible for abnormal exhaust conditions, repair the underlying problem.

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Update or Reprogram the ECM

If manufacturer service information identifies a software or calibration problem, perform the appropriate update.

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Replace the ECM/PCM

ECM/PCM replacement should generally be the last step.

Before replacing the module, verify:

• EGT sensor

• Sensor connector

• Wiring

• Reference/supply circuit

• Ground/return circuit

• Signal circuit

• Resistance

• Continuity

• Exhaust condition

• Engine operation

• DPF/aftertreatment operation

• Software/calibration

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What Happens If P2083 Is Ignored?

Ignoring P2083 may result in:

• Check Engine Light remaining illuminated

• Intermittent or inaccurate EGT readings

• Increased emissions

• Poor fuel economy

• Reduced engine performance

• Limp mode on some vehicles

• DPF regeneration problems

• Increased DPF loading

• Aftertreatment problems

• Incorrect exhaust-temperature monitoring

If the EGT sensor is unable to report a genuinely excessive exhaust temperature, the ECM may not be able to apply the correct protective strategy.

If the exhaust is actually operating at excessive temperatures, continued operation may potentially damage:

• Turbocharger

• Catalytic converter

• DPF

• GPF

• Other exhaust components

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Can You Drive With P2083?

Short-term driving may be possible if the vehicle runs normally and the Check Engine Light is steady, but P2083 should be diagnosed promptly.

Because this is an intermittent EGT circuit fault, the vehicle may initially appear to operate normally.

Extra caution is appropriate on diesel vehicles where EGT sensors are used during DPF regeneration or exhaust aftertreatment control.

Avoid continued driving if the vehicle develops:

• Severe power loss

• Limp mode

• Excessive smoke

• Strong exhaust smell

• Abnormal turbocharger noise

• Severe misfire

• Overheating

• Flashing Check Engine Light

• Other serious warning lights

A flashing Check Engine Light or severe engine-running problem should be treated as an urgent condition.

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Is P2083 a Serious Code?

P2083 is generally considered a moderate-severity diagnostic trouble code, but the seriousness depends on the underlying cause.

A loose connector, damaged wire, or failing EGT sensor may be relatively straightforward to repair.

However, if the intermittent sensor problem is related to:

• Excessive exhaust temperature

• DPF restriction

• Turbocharger problems

• Severe misfire

• Fuel-system problems

• Exhaust aftertreatment problems

the underlying fault can be considerably more serious.

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P2083 vs. Related EGT Codes

Code	General Description
P2082	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1
P2083	Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1
P2084	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2085	Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 2
P2086	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2
P2087	Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2
P2088	"A" Camshaft Position Actuator Control Circuit Low Bank 1
P2089	"A" Camshaft Position Actuator Control Circuit High Bank 1
P2090	"B" Camshaft Position Actuator Control Circuit Low Bank 1
P2091	"B" Camshaft Position Actuator Control Circuit High Bank 1

Important: EGT sensor numbering and exact sensor locations can vary by manufacturer. Generic OBD-II descriptions should therefore be confirmed against the vehicle-specific service information.

The key distinction is that P2083 identifies an intermittent circuit problem involving Bank 2 Sensor 1, while P2082/P2084/P2086 generally identify a range/performance problem for the specified EGT sensor.

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How to Prevent P2083

Regular maintenance can help reduce the risk of EGT sensor and exhaust-system faults.

Recommended practices include:

• Maintain the engine according to manufacturer recommendations.

• Use the correct engine oil and filters.

• Maintain the fuel system properly.

• Repair engine misfires immediately.

• Repair exhaust leaks promptly.

• Keep EGT sensor wiring away from excessive heat.

• Ensure the harness is properly secured.

• Keep electrical connectors clean and dry.

• Maintain DPF and aftertreatment systems where applicable.

• Address turbocharger problems promptly.

• Avoid unauthorized exhaust modifications.

• Avoid poorly installed tuning modifications.

• Keep ECM software updated when applicable.

• Do not ignore recurring Check Engine Light warnings.

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Final Thoughts

The P2083 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1 diagnostic trouble code indicates that the ECM/PCM has detected an intermittent electrical problem involving the EGT sensor circuit for Bank 2 Sensor 1.

The most common causes include:

• Faulty EGT sensor

• Damaged sensor wiring

• Heat-damaged wiring

• Loose connector

• Poor terminal contact

• Corroded terminals

• Partially broken wire

• Vibration-related wiring problems

• Water intrusion

• Poor previous wiring repairs

• Exhaust-system damage

• Excessive exhaust temperature

• Engine misfire

• Fuel-system problems

• DPF or aftertreatment problems

• Turbocharger problems

• ECM/software issues

Because P2083 specifically identifies an intermittent fault, the wiring harness and connector deserve particular attention. A sensor may test normally when the vehicle is stationary and cold but fail when the exhaust becomes hot or the harness is exposed to vibration.

The best diagnostic approach is to monitor Bank 2 Sensor 1 live EGT data, inspect the sensor and connector, perform a wiggle test, and test the sensor circuit for resistance, continuity, and intermittent faults.

If the electrical circuit checks out, determine whether the exhaust temperature is genuinely abnormal. Misfires, fuel-system faults, turbocharger problems, exhaust restrictions, and DPF regeneration issues can all produce excessive exhaust temperatures.

P2083 should not simply be cleared or treated by automatically replacing the sensor. The underlying cause should be identified, particularly on diesel vehicles where EGT sensors can play an important role in DPF regeneration, turbocharger protection, catalytic-converter protection, and exhaust aftertreatment control.