P0767 Shift Solenoid "D" Stuck On

The P0767 trouble code is an OBD-II diagnostic trouble code related to the operation of Shift Solenoid "D" inside an automatic transmission.

P0767 – Shift Solenoid "D" Stuck On

This code means that the Transmission Control Module (TCM) has detected that Shift Solenoid "D" is remaining in an ON or active condition when the transmission system expects it to turn OFF.

Shift Solenoid "D" is an electronically controlled valve that regulates transmission fluid flow through a specific hydraulic circuit. When it remains active at the wrong time, hydraulic pressure can be directed through the wrong passage, potentially affecting gear changes and clutch operation.

P0767 does not automatically mean that the solenoid itself is defective. The condition can also be caused by a shorted electrical circuit, contaminated transmission fluid, a sticking solenoid plunger, a valve-body problem or, in some cases, a TCM control fault.

What Does P0767 Mean?

An automatic transmission uses hydraulic pressure to control different gears.

The TCM determines when individual solenoids should be activated or deactivated.

The basic process is:

TCM → Electrical Command → Shift Solenoid "D" → Hydraulic Fluid Flow → Gear/Clutch Control

Under normal operation, Solenoid "D" should respond to the TCM's commands.

For example, the TCM may command the solenoid:

ON → OFF → ON → OFF

If the system detects that the solenoid remains active when an OFF condition is expected, it can store:

P0767 – Shift Solenoid "D" Stuck On

The important part of this code is "Stuck On."

The problem can be electrical, mechanical or hydraulic.

What Is Shift Solenoid "D"?

Shift Solenoid "D" is one of the electrically controlled solenoids used by an automatic transmission.

Its job is to regulate transmission-fluid flow according to commands from the TCM.

Depending on the specific transmission, Solenoid "D" can influence:

• Gear changes

• Clutch application

• Brake application

• Shift valves

• Hydraulic pressure

• Specific gear combinations

There is no universal rule that Solenoid "D" controls the same gear in every vehicle.

Transmission manufacturers use different hydraulic and electrical designs, so the exact function must be determined from the vehicle's transmission documentation.

What Does "Stuck On" Mean?

A stuck-on condition means that the transmission system detects that Solenoid "D" is active when it should not be.

There are several ways this can happen.

Electrical stuck-on condition

A shorted control wire or failed TCM driver can keep the solenoid energized.

Mechanical stuck-on condition

The solenoid's internal plunger may become physically stuck.

Hydraulic stuck-on condition

A valve associated with the solenoid may remain in a position that keeps the hydraulic circuit active.

This distinction is important because replacing the solenoid will not necessarily fix P0767 if the real problem is in the wiring or valve body.

Symptoms of P0767

The symptoms vary depending on what Solenoid "D" controls in the particular transmission.

Possible symptoms include:

• Check Engine Light

• Transmission warning light

• Harsh shifting

• Delayed shifting

• Erratic gear changes

• Unexpected downshifting

• Transmission slipping

• Shift flare

• Incorrect gear selection

• Missing gear

• Transmission stuck in one gear

• Delayed Drive engagement

• Delayed Reverse engagement

• Limp mode

• Reduced acceleration

• Poor fuel economy

• Increased transmission temperature

Some vehicles may store P0767 without producing immediately noticeable symptoms.

What Does P0767 Feel Like While Driving?

Harsh gear changes

If Solenoid "D" keeps hydraulic pressure active when it should be released, a clutch or brake may apply too aggressively.

Delayed shifts

The transmission may hesitate because hydraulic pressure is not being controlled correctly.

Unexpected downshifting

The transmission may select a lower gear unexpectedly, particularly if the TCM enters a fail-safe strategy.

Transmission slipping

Incorrect hydraulic pressure can prevent a clutch from applying correctly.

Shift flare

Engine RPM can rise unexpectedly during a gear change.

Limp mode

The TCM may restrict the available gears to protect the transmission.

Common Causes of P0767

Faulty Shift Solenoid "D"

The solenoid may have an internal mechanical or electrical defect.

Solenoid plunger stuck

Contaminated fluid or debris can prevent the solenoid from moving freely.

Shorted control wire

A damaged wire can keep the solenoid electrically energized.

Damaged connector

A poor connection can interfere with correct solenoid control.

Corroded terminals

Corrosion can alter the electrical characteristics of the circuit.

Transmission-fluid contamination

Metal particles, clutch material and other debris can interfere with solenoid operation.

Valve-body problem

A sticking valve or worn valve bore can cause hydraulic pressure to remain active.

Blocked hydraulic passage

Contamination can interfere with normal fluid movement.

Internal transmission wiring fault

The internal harness can develop an open or short circuit.

TCM driver failure

The TCM may incorrectly continue energizing the solenoid.

Incorrect transmission fluid

Using fluid that does not meet the manufacturer's specification can contribute to hydraulic and solenoid problems.

Is P0767 Serious?

Yes, P0767 should be taken seriously.

A stuck-on shift solenoid can cause the transmission to operate with incorrect hydraulic pressure.

If the vehicle continues to be driven while shifting incorrectly or slipping, additional wear can occur.

Potential consequences include:

• Clutch wear

• Excessive heat

• Accelerated transmission-fluid degradation

• Hydraulic-system stress

• Additional internal transmission wear

However, P0767 does not automatically mean that the transmission needs to be rebuilt or replaced.

The cause may be a relatively simple electrical or solenoid problem.

Can You Drive With P0767?

If the vehicle still shifts normally and there are no serious symptoms, a short drive to a repair facility may be possible.

However, continued driving should be avoided if you experience:

• Severe transmission slipping

• Violent shifting

• Loss of gears

• Loss of Drive

• Loss of Reverse

• Transmission overheating

• Persistent limp mode

Driving for an extended period with a slipping transmission can turn a manageable fault into a much more expensive repair.

P0767 vs. P0768

These codes both concern Shift Solenoid "D", but they describe different conditions.

P0767 – Shift Solenoid "D" Stuck On

The system detects that Solenoid "D" remains active when it should be OFF.

P0768 – Shift Solenoid "D" Electrical Malfunction

The system detects an electrical malfunction involving the Solenoid "D" circuit.

P0768 points more directly toward an electrical circuit problem, while P0767 requires determining whether the solenoid is electrically or mechanically stuck ON.

P0767 vs. P0766

P0766 – Shift Solenoid "D" Performance / Stuck Off

The solenoid is not operating as expected or appears to be stuck OFF.

P0767 – Shift Solenoid "D" Stuck On

The solenoid is detected as remaining active.

This distinction can significantly change the diagnostic direction.

P0767 vs. P0769

P0769 – Shift Solenoid "D" Intermittent

The fault occurs intermittently.

P0767 – Shift Solenoid "D" Stuck On

The system detects a persistent ON condition.

An intermittent electrical problem may eventually develop into a permanent fault, but the two codes represent different detected behaviors.

P0767 vs. P0765

P0765 – Shift Solenoid "D" Malfunction

This is a general malfunction code associated with Solenoid "D".

P0767 – Shift Solenoid "D" Stuck On

This is more specific and indicates that the system detects an ON condition when the solenoid should not be active.

Where Is Shift Solenoid "D"?

The physical location depends on the transmission.

It may be:

• Inside the transmission

• Mounted in the valve body

• Beneath the transmission pan

• Integrated into a solenoid pack

• Integrated into a mechatronic unit

Some transmissions permit individual solenoid replacement.

Others require removal or servicing of the valve body or solenoid assembly.

How to Diagnose P0767

A proper diagnosis should determine why Solenoid "D" remains active.

1. Scan the TCM

Use a professional diagnostic scanner and retrieve all transmission-related codes.

Record:

• Stored codes

• Pending codes

• Freeze-frame data

• Transmission temperature

• Commanded gear

• Actual gear

• Solenoid commands

• Input speed

• Output speed

Additional codes can provide important clues.

2. Check freeze-frame data

Look at the conditions present when P0767 was stored.

Important information includes:

• Vehicle speed

• Engine RPM

• Transmission temperature

• Throttle position

• Engine load

• Selected gear

• Battery voltage

This can help determine whether the fault occurs during a particular shift or operating condition.

3. Determine whether the TCM is commanding Solenoid "D" ON

This is one of the most important steps.

If the TCM is commanding the solenoid OFF, but the solenoid remains electrically energized, suspect:

• Shorted wiring

• Short to power

• Solenoid electrical failure

• TCM driver fault

If the TCM is actually commanding the solenoid ON, the next question is whether that command is appropriate and whether the transmission responds correctly.

4. Inspect the wiring harness

Look for:

• Chafing

• Broken wires

• Melted insulation

• Pinched wiring

• Short circuits

• Poor previous repairs

Pay special attention to areas near the transmission and exhaust system.

5. Inspect the transmission connector

Check for:

• Corrosion

• Bent pins

• Loose terminals

• Water intrusion

• Transmission-fluid contamination

• Damaged connector housing

6. Test the electrical circuit

Check the Solenoid "D" circuit for:

• Short to power

• Short to ground

• Open circuit

• Excessive resistance

Use the manufacturer's wiring diagram rather than relying on generic pin assignments.

7. Measure solenoid resistance

Measure Solenoid "D" resistance and compare it with the manufacturer's specification.

An abnormal reading can indicate an internal coil problem.

However, a normal resistance reading does not prove that the solenoid is mechanically free.

8. Check the control signal

Determine whether the TCM is sending the expected control signal.

An oscilloscope can be useful on systems using PWM control.

9. Inspect transmission fluid

Check:

• Fluid level

• Fluid condition

• Correct fluid specification

• Burnt smell

• Metal particles

• Clutch material

Severely contaminated fluid can cause solenoids and valves to stick.

10. Test the solenoid mechanically

If the electrical circuit is correct, the solenoid should be evaluated for mechanical movement.

A solenoid can have correct electrical resistance and still be physically stuck.

11. Inspect the valve body

If the solenoid operates electrically but the hydraulic circuit remains active, inspect the valve body.

Possible problems include:

• Sticking valves

• Worn valve bores

• Debris

• Contaminated passages

• Internal hydraulic leakage

12. Check hydraulic pressure

Hydraulic pressure testing can help determine whether the affected circuit is remaining pressurized.

The correct test procedure and pressure specifications must come from the transmission manufacturer.

13. Evaluate the TCM

If the wiring, solenoid and hydraulic components are confirmed to be functioning correctly, the TCM driver may need to be tested.

Can a Bad Solenoid Cause P0767?

Yes.

A defective Solenoid "D" can remain active because of:

• Internal mechanical sticking

• Electrical coil failure

• Contamination

• Internal damage

Can Wiring Cause P0767?

Yes.

A shorted control circuit can continuously energize the solenoid.

This is one of the reasons the wiring should be tested before replacing transmission components.

Can a Bad Connector Cause P0767?

It can.

Connector faults are more commonly associated with intermittent or open-circuit problems, but a damaged connector can create abnormal electrical conditions that affect solenoid control.

Can Dirty Transmission Fluid Cause P0767?

Yes.

Contaminated fluid can cause the solenoid plunger or related hydraulic valve to stick.

This is particularly important on transmissions with significant clutch-material or metal contamination.

Can Low Transmission Fluid Cause P0767?

Low fluid is not normally the direct cause of a stuck-on solenoid condition.

However, low fluid can create hydraulic problems and should always be checked when diagnosing a transmission fault.

Can a Bad Valve Body Cause P0767?

Yes.

A valve associated with the Solenoid "D" hydraulic circuit may stick because of contamination or wear.

In this situation, replacing the electrical solenoid alone may not solve the problem.

Can a Bad TCM Cause P0767?

Yes.

A failed TCM driver can continuously energize the solenoid.

However, the TCM should generally be considered only after the wiring, solenoid and related components have been tested.

Can P0767 Cause Harsh Shifting?

Yes.

A stuck-on solenoid can cause hydraulic pressure to be applied at the wrong time.

Can P0767 Cause Transmission Slipping?

Yes, depending on the transmission design.

If the affected circuit controls a clutch, incorrect hydraulic pressure can contribute to clutch slip.

Can P0767 Cause Limp Mode?

Yes.

The TCM may enter a fail-safe mode when it detects abnormal solenoid operation.

Can P0767 Cause Transmission Overheating?

Yes, potentially.

Incorrect clutch application or slipping can generate excessive heat.

Can P0767 Damage the Transmission?

It can if the vehicle is driven for an extended period with severe symptoms.

A continuously incorrect hydraulic condition can increase clutch and transmission-component wear.

Common Diagnostic Mistakes With P0767

Replacing the solenoid immediately

The actual problem may be a shorted wire or a valve-body problem.

Assuming "stuck on" means the solenoid is physically stuck

The solenoid may actually be electrically energized by a shorted circuit.

Testing only resistance

Resistance testing cannot prove that the solenoid moves correctly.

Ignoring the TCM command

The technician should determine whether the TCM is actually commanding the solenoid ON.

Ignoring the valve body

A mechanically stuck hydraulic valve can produce symptoms similar to a stuck solenoid.

Ignoring transmission-fluid contamination

Debris can cause both solenoid and valve-body problems.

Replacing the TCM too early

The TCM should not be condemned until the complete circuit has been tested.

What Is the Correct Repair for P0767?

The repair depends on the confirmed cause.

Possible repairs include:

• Replacing Shift Solenoid "D"

• Repairing a shorted control wire

• Repairing damaged wiring

• Replacing damaged connector terminals

• Cleaning connector corrosion

• Repairing water intrusion

• Servicing the valve body

• Cleaning contaminated hydraulic passages

• Correcting the transmission-fluid level

• Replacing severely contaminated fluid according to the manufacturer's procedure

• Repairing internal transmission wiring

• Updating TCM software where applicable

• Reprogramming the TCM

• Replacing the TCM if its driver circuit is confirmed defective

How to Test the Vehicle After Repair

After the repair, the vehicle should be tested under different driving conditions.

Verify that:

• Solenoid "D" responds correctly

• The solenoid turns OFF when commanded

• The electrical signal is correct

• Wiring remains stable

• Connectors remain secure

• Transmission fluid is at the correct level

• Gear changes are smooth

• No gears are missing

• No slipping occurs

• Engine RPM behaves normally during shifts

• Transmission temperature remains normal

• Limp mode does not activate

• No additional transmission codes appear

• P0767 does not return

The road test should include different gears, speeds, throttle positions and transmission temperatures.

Frequently Asked Questions About P0767

What does P0767 mean?

P0767 means the transmission control system has detected that Shift Solenoid "D" is stuck in an ON or active condition.

Does P0767 mean Shift Solenoid "D" is bad?

Not necessarily. Wiring, contamination, the valve body and the TCM can also cause the condition.

Can a shorted wire cause P0767?

Yes.

Can dirty transmission fluid cause P0767?

Yes. Contamination can cause the solenoid or hydraulic valve to stick.

Can a bad valve body cause P0767?

Yes.

Can a bad TCM cause P0767?

Yes, although it should normally be considered after the solenoid and wiring have been tested.

Can P0767 cause harsh shifting?

Yes.

Can P0767 cause transmission slipping?

Yes, depending on which hydraulic circuit is controlled by Solenoid "D".

Can P0767 cause limp mode?

Yes.

Can P0767 cause transmission overheating?

It can, particularly if the fault results in clutch slip or repeated incorrect shifts.

Can I drive with P0767?

If the vehicle still shifts normally, a short drive to a repair facility may be possible. If there is severe slipping, violent shifting, overheating or loss of gears, continued driving should be avoided.

Does P0767 mean the transmission needs to be replaced?

No. The problem may be limited to a solenoid, wiring, connector, valve-body component or TCM.

Final Thoughts on P0767

P0767 – Shift Solenoid "D" Stuck On means that the transmission control system has detected that Shift Solenoid "D" is remaining active when it should not be.

The key diagnostic question is:

Is Solenoid "D" physically stuck, or is something keeping it electrically energized?

A logical diagnostic sequence is:

Scan Data → TCM Command → Wiring → Connector → Solenoid → Transmission Fluid → Valve Body → Hydraulic Pressure → TCM

If the TCM commands the solenoid OFF but the circuit continues to energize it, an electrical fault becomes highly likely. If the electrical control is correct but the solenoid or hydraulic circuit remains active, mechanical sticking or a valve-body problem should be investigated.

Therefore, P0767 should not automatically lead to solenoid replacement or transmission replacement. Proper electrical and hydraulic diagnosis is essential to identify the real cause and prevent unnecessary repairs.