P0967 Pressure Control Solenoid "B" Control Circuit High

The P0967 trouble code is an OBD-II diagnostic trouble code associated with the electronic and hydraulic control system of an automatic transmission.

P0967 – Pressure Control Solenoid “B” Control Circuit High

This code means that the transmission control module (TCM) or powertrain control module (PCM) has detected an electrical condition that is higher than the expected value in the control circuit of Pressure Control Solenoid “B.”

The word “High” refers to the electrical signal or circuit condition, not necessarily to excessively high hydraulic pressure inside the transmission.

A faulty pressure control solenoid can trigger P0967, but the solenoid is not automatically the cause. A short to battery voltage, damaged wiring, connector problems, incorrect solenoid resistance, a power-supply fault or a TCM problem can also produce this code.

What Does P0967 Mean?

P0967 – Pressure Control Solenoid “B” Control Circuit High

Automatic transmissions use electronically controlled pressure-control solenoids to regulate transmission fluid pressure.

The TCM monitors and controls these solenoids according to information such as:

• Engine RPM

• Vehicle speed

• Throttle position

• Engine load

• Transmission temperature

• Selected gear

• Torque demand

• Driving conditions

Pressure Control Solenoid “B” controls hydraulic pressure within a particular transmission circuit.

When the TCM detects that the electrical condition in the solenoid's control circuit is higher than expected, it can store P0967.

A simplified operating sequence is:

TCM command → Pressure Control Solenoid “B” → Hydraulic pressure regulation → Clutch/gear operation

If the electrical circuit cannot be controlled correctly, the transmission may not be able to achieve the required hydraulic pressure.

What Is a Pressure Control Solenoid?

A pressure control solenoid is an electrically controlled hydraulic valve.

It regulates transmission fluid pressure in response to commands from the TCM.

Depending on the transmission design, it may influence:

• Main line pressure

• Clutch pressure

• Shift pressure

• Torque converter pressure

• Pressure in a specific hydraulic circuit

The TCM continuously adjusts solenoid operation to provide the correct pressure for different driving conditions.

What Does the “B” Mean?

The “B” identifies a particular pressure-control solenoid according to the manufacturer's transmission design.

It does not universally mean that it is the second solenoid physically installed in the transmission.

Different transmissions use different solenoid configurations and naming systems.

Pressure Control Solenoid “B” may be located:

• Inside the transmission

• Inside the valve body

• In a mechatronic assembly

• On a transmission control assembly

The exact location and function should be confirmed using vehicle-specific service information.

What Does “Circuit High” Mean?

The “High” designation means that the TCM has detected an electrical condition above the expected level in the Pressure Control Solenoid “B” control circuit.

Possible causes include:

• Short to battery voltage

• Faulty solenoid

• Incorrect solenoid resistance

• Damaged wiring

• Connector problems

• Power-supply problems

• TCM fault

The exact interpretation depends on the manufacturer's circuit design and monitoring strategy.

Does P0967 Mean Transmission Pressure Is Too High?

Not necessarily.

This is an important distinction when diagnosing P0967.

P0967 is primarily an electrical circuit code.

The code indicates that the TCM has detected an abnormally high electrical condition in the solenoid control circuit. It does not automatically confirm that actual hydraulic pressure inside the transmission is too high.

For example, if the solenoid control wire becomes shorted to battery voltage, the TCM may detect a high circuit condition even if the transmission's hydraulic pressure is normal.

Therefore:

Electrical circuit high ≠ hydraulic pressure high

Actual hydraulic pressure should be checked separately if the diagnostic process indicates a possible hydraulic problem.

Does P0967 Mean Pressure Control Solenoid “B” Is Bad?

No.

A defective solenoid is only one possible cause.

The actual problem may be:

• Short to battery voltage

• Damaged wiring

• Corroded connector

• Loose terminal

• Incorrect solenoid resistance

• Power-supply problem

• TCM control problem

The complete circuit should be tested before replacing the solenoid.

Symptoms of P0967

Symptoms depend on the transmission design and the function of Pressure Control Solenoid “B.”

Possible symptoms include:

• Check Engine Light

• Transmission warning light

• Harsh shifting

• Soft shifting

• Delayed gear changes

• Erratic shifting

• Transmission slipping

• Increased engine RPM

• Poor acceleration

• Delayed Drive engagement

• Delayed Reverse engagement

• Transmission stuck in one gear

• Limp mode

• Reduced fuel economy

Some vehicles may continue to drive almost normally.

In those cases, the Check Engine Light may be the only noticeable symptom.

Common Causes of P0967

Several electrical problems can trigger this code.

Faulty Pressure Control Solenoid “B”

The solenoid may have an internal electrical or mechanical problem.

Possible failures include:

• Internal coil failure

• Incorrect resistance

• Internal short

• Mechanical sticking

• Contamination

• Slow response

A solenoid can sometimes pass a basic resistance test and still fail under operating conditions.

Short to battery voltage

A damaged control wire may contact a powered circuit.

This can cause the control circuit voltage to remain higher than expected.

Possible sources include:

• Battery voltage

• Ignition voltage

• Another powered circuit

This is one of the most important possibilities when diagnosing a circuit-high code.

Damaged wiring

Transmission wiring is exposed to:

• Heat

• Vibration

• Moisture

• Transmission fluid

• Oil

• Road contamination

Possible wiring problems include:

• Chafed insulation

• Broken conductors

• Pinched wires

• Melted insulation

• Corrosion

• High resistance

• Poor previous repairs

Connector problems

A damaged connector can interfere with proper solenoid control.

Possible issues include:

• Bent pins

• Loose terminals

• Corrosion

• Water intrusion

• Transmission fluid contamination

• Damaged connector locks

Incorrect solenoid resistance

The solenoid coil should have resistance within the manufacturer's specified range.

Resistance outside specification can indicate an internal solenoid problem.

The correct resistance varies between transmissions.

Power-supply problems

Some transmissions use shared electrical circuits for multiple solenoids.

A fault in a shared circuit can produce several solenoid-related codes.

If P0967 appears together with other solenoid circuit codes, shared power and ground circuits should be inspected.

Valve body problems

A sticking or worn valve can affect hydraulic pressure and transmission behavior.

Possible causes include:

• Contamination

• Worn valve bores

• Sticking valves

• Restricted passages

However, a valve-body problem alone does not necessarily explain an electrical circuit-high code.

Transmission control module fault

A TCM fault is possible, but it should generally be considered only after the wiring, connectors and solenoid have been tested.

Can Low Transmission Fluid Cause P0967?

Low transmission fluid does not normally cause P0967 directly.

Low fluid can cause:

• Low hydraulic pressure

• Delayed engagement

• Slipping

• Erratic shifting

However, insufficient fluid does not normally create an electrical circuit-high condition.

The transmission fluid level should still be checked because low fluid can cause separate hydraulic problems.

Can Dirty Transmission Fluid Cause P0967?

Contaminated transmission fluid can contribute to:

• Solenoid sticking

• Valve-body problems

• Restricted passages

• Erratic pressure control

However, dirty fluid alone does not necessarily explain an electrical circuit-high code.

If P0967 is present, the electrical circuit should still be tested.

P0967 vs. P0966 vs. P0968

These codes involve different electrical conditions and should not be confused.

P0966 – Pressure Control Solenoid “B” Control Circuit Range/Performance

The circuit or solenoid operation is outside the expected range or performance.

P0967 – Pressure Control Solenoid “B” Control Circuit High

The TCM detects an electrical condition higher than expected.

P0968 – Pressure Control Solenoid “C” Control Circuit/Open

This concerns a different pressure-control solenoid and indicates an open or interrupted circuit.

The distinction is important because P0967 should direct diagnostic attention toward unwanted high voltage, shorted wiring, solenoid resistance and the control circuit.

How Serious Is P0967?

P0967 can range from a relatively simple electrical problem to a significant transmission-control problem.

A damaged wire, connector or terminal may be straightforward to repair.

However, incorrect pressure control can affect clutch engagement and shift quality.

If the problem continues, it can contribute to:

• Clutch slipping

• Excessive heat

• Harsh shifting

• Accelerated internal wear

• Limp mode

For this reason, P0967 should not be ignored.

Can You Drive With P0967?

If the vehicle continues to shift normally and there are no severe symptoms, a short drive to a repair facility may be possible.

However, prolonged driving with an unresolved transmission-control fault is not recommended.

Driving should be minimized if you experience:

• Severe transmission slipping

• Violent gear changes

• Loss of Drive

• Loss of Reverse

• Transmission overheating

• Limp mode

• Burning transmission fluid smell

These symptoms may indicate a more serious transmission problem.

How to Diagnose P0967

Because P0967 indicates a circuit-high condition, electrical testing should be a major part of the diagnosis.

1. Scan the TCM

Use a professional diagnostic scanner to retrieve all stored and pending codes.

Look for additional faults involving:

• Other pressure-control solenoids

• Shift solenoids

• Transmission pressure sensors

• Transmission temperature

• Gear ratios

• Communication

• Power supply

Multiple solenoid codes can indicate a shared electrical problem.

2. Check freeze-frame data

Review the conditions under which P0967 was stored.

Useful information may include:

• Engine RPM

• Vehicle speed

• Transmission temperature

• Selected gear

• Throttle position

• Solenoid command

• Transmission operating mode

This can help identify when the fault occurs.

3. Identify Pressure Control Solenoid “B”

Use the vehicle-specific wiring diagram to identify:

• Solenoid location

• Connector pinout

• Power supply

• Control wire

• TCM connection

• Circuit strategy

Do not assume that Pressure Control Solenoid “B” has the same location on another transmission.

4. Inspect the wiring

Look for:

• Chafed insulation

• Broken wires

• Pinched wires

• Melted insulation

• Corrosion

• High resistance

• Poor previous repairs

Pay particular attention to the harness near the transmission and exhaust.

5. Inspect the connectors

Check for:

• Bent pins

• Loose terminals

• Corrosion

• Water intrusion

• Transmission fluid contamination

• Damaged connector locks

A connector may appear connected while a terminal inside it has poor contact.

6. Measure solenoid resistance

Disconnect the appropriate connector and measure the resistance of Pressure Control Solenoid “B.”

Compare the result with the manufacturer's specification.

If the resistance is outside specification, the solenoid may be defective.

Do not use a universal resistance value because specifications vary between transmissions.

7. Check for a short to voltage

Because P0967 indicates a circuit-high condition, inspect the control wire for unintended voltage.

Check whether the wire is contacting:

• Battery voltage

• Ignition voltage

• Another powered circuit

This is one of the most important tests for P0967.

8. Check the electrical control circuit

Test:

• Solenoid power supply

• Control signal

• Continuity

• Resistance

• Voltage drop

• TCM command

The exact test procedure depends on the transmission's electrical architecture.

The manufacturer's wiring diagram should always be followed.

9. Use a bidirectional scan tool

If supported, command Pressure Control Solenoid “B” using a professional diagnostic scanner.

Observe:

• Solenoid command

• Electrical response

• Transmission pressure data

• Transmission behavior

This can help determine whether the fault is electrical or hydraulic.

10. Check actual transmission pressure if necessary

If the electrical system and solenoid pass testing but transmission operation remains abnormal, hydraulic pressure testing may be necessary.

This can help identify:

• Pressure-control problems

• Valve-body faults

• Internal leakage

• Transmission pump problems

• Mechanical transmission faults

Why P0967 Can Be Difficult to Diagnose

P0967 can sometimes occur intermittently.

The fault may appear only:

• When the transmission is hot

• During acceleration

• Under heavy load

• At a specific engine speed

• During a particular gear change

• After extended driving

A damaged harness can also change behavior as the engine and transmission move under load.

A control wire may appear normal when the vehicle is stationary but contact another powered circuit when the powertrain moves.

P0967 After Transmission Repair

If P0967 appears immediately after transmission repair or replacement, inspect the components disturbed during the repair.

Possible causes include:

• Connector not fully seated

• Bent connector terminal

• Pinched wiring

• Damaged harness

• Incorrect harness routing

• Contaminated connector

• Damaged solenoid connector

If the code appeared immediately after transmission work, the repair area should be inspected carefully before assuming that the transmission has suffered an internal failure.

P0967 After a Transmission Fluid Change

A transmission fluid change does not normally cause an electrical circuit-high code by itself.

However, if P0967 appeared after service, verify:

• Correct transmission fluid

• Correct fluid level

• Correct filling procedure

• Correct fluid temperature during level checking

• Connector condition

• Wiring condition

An incorrect fluid level can create hydraulic problems but would not normally explain the electrical circuit-high condition.

Can P0967 Cause Limp Mode?

Yes.

Depending on the transmission design, the TCM may activate a protective operating strategy if it determines that Pressure Control Solenoid “B” cannot be controlled correctly.

The vehicle may:

• Remain in a single gear

• Use a limited number of gears

• Shift harshly

• Increase line pressure

• Delay engagement

• Limit transmission functionality

Not every vehicle with P0967 will enter limp mode.

The exact response depends on the transmission and control software.

Can P0967 Damage the Transmission?

P0967 does not automatically mean that internal transmission damage has already occurred.

However, incorrect pressure control can affect clutch engagement.

If the transmission continues operating with abnormal pressure control, it may increase:

• Clutch wear

• Heat

• Hydraulic stress

• Internal component wear

If the transmission is slipping or shifting violently, continued driving can make the underlying problem worse.

Common Diagnostic Mistakes With P0967

One of the most common mistakes is immediately replacing Pressure Control Solenoid “B.”

The solenoid may be functioning correctly while the actual problem is:

• Short to battery voltage

• Damaged wiring

• Corroded connector

• Poor terminal contact

• Power-supply problem

• TCM control problem

Another mistake is interpreting “Circuit High” as “transmission pressure is high.”

P0967 primarily describes an electrical condition.

Another common mistake is replacing the entire transmission without testing the electrical and hydraulic systems.

P0967 alone does not prove that the transmission needs to be rebuilt or replaced.

What Is the Correct Repair for P0967?

The correct repair depends on the confirmed cause.

Possible repairs include:

• Replacing Pressure Control Solenoid “B”

• Repairing damaged wiring

• Removing a short to battery voltage

• Replacing damaged connector terminals

• Cleaning or replacing a contaminated connector

• Restoring the correct solenoid power supply

• Repairing the solenoid control circuit

• Correcting poor electrical connections

• Repairing a sticking valve

• Repairing the valve body

• Correcting hydraulic pressure problems

• Repairing internal transmission components when confirmed

• Repairing or replacing the TCM when it is conclusively diagnosed as faulty

Final Thoughts on P0967

P0967 – Pressure Control Solenoid “B” Control Circuit High indicates that the transmission control module has detected an abnormally high electrical condition in the control circuit of Pressure Control Solenoid “B.”

The most important areas to investigate are the solenoid, wiring, connectors, power supply and control circuit.

A short to battery voltage, damaged wiring or connector problem can produce P0967 even when the pressure control solenoid itself is functioning correctly.

It is also important to remember that P0967 does not automatically mean that transmission hydraulic pressure is too high. The code primarily identifies an electrical circuit problem.

A systematic diagnosis should begin with the electrical circuit. If the electrical system passes inspection, the technician can then investigate the solenoid's mechanical operation, valve body and hydraulic pressure.

Testing the circuit before replacing parts is the best way to diagnose P0967 correctly and avoid unnecessary solenoid or transmission replacement.