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DTC codes / P07xx · Transmission / P0767

P0767Shift Solenoid 'D' Stuck On

P0767 means the transmission control module (TCM) has commanded shift solenoid D on, but the solenoid's electrical circuit remains continuously energized or mechanically stuck in the applied position. The computer detects this by comparing the commanded solenoid state to the actual state inferred from hydraulic pressure switches or circuit feedback, and it sets the code when the solenoid stays on longer than expected.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaTransmission

Symptoms you may notice

  • The check engine light or transmission warning light illuminates on the dashboard.
  • Harsh or delayed shifts, especially when the transmission tries to engage or release the affected gear.
  • The transmission may stick in a single gear or fail to downshift when coming to a stop.
  • A noticeable clunk or jerk when shifting into drive or reverse.
  • Often no symptoms besides the warning light, particularly if the fault is intermittent or only occurs under specific conditions.
  • Reduced fuel economy or altered shift feel during normal driving.

Common causes, most likely first

  1. Shift solenoid D itself has failed mechanically and is stuck in the applied position.
  2. A short to power in the solenoid control circuit, holding the solenoid energized continuously.
  3. Contaminated transmission fluid or debris lodged in the solenoid valve, preventing it from releasing.
  4. A faulty transmission control module (TCM) driver circuit that keeps the solenoid grounded when it should not be.
  5. Damaged or chafed wiring harness between the TCM and the solenoid, causing an intermittent short.
  6. Internal transmission hydraulic issues, such as a stuck valve body spool valve, that mimic a stuck solenoid.
  7. Low or degraded transmission fluid causing erratic solenoid operation and sticking.

How to diagnose and fix it

  1. Check the transmission fluid level and condition; top off or replace fluid if it is low, dark, or contaminated.
  2. Use a scan tool to command shift solenoid D on and off while watching circuit feedback or pressure switch data to confirm the stuck condition.
  3. Inspect the wiring harness and connector at the solenoid for chafing, corrosion, or a short to power, and repair as needed.
  4. Measure the resistance of shift solenoid D and compare it to the manufacturer's specification to rule out an internal short.
  5. If the solenoid is accessible, remove and bench-test it for mechanical sticking, or replace it if it fails the test.
  6. Check the valve body for debris or a stuck spool valve that could hold the solenoid circuit applied, and clean or rebuild as necessary.
  7. After repairs, clear the code and perform a relearn or adaptation drive cycle to verify the transmission shifts correctly and the code does not return.

What a stuck-on solenoid really means

  • A short to power in the solenoid control circuit is a common cause that many technicians overlook when they replace the solenoid itself without fixing the wiring.
  • The code can be set by a mechanical stick in the valve body rather than an electrical solenoid failure, so replacing the solenoid alone may not solve the problem.
  • Intermittent P0767 codes often appear only when the transmission is cold or under specific load conditions, making a road test with a scan tool essential for accurate diagnosis.
  • Some vehicles use shift solenoid D for multiple gears, so a stuck-on condition can cause different symptoms depending on which gear the transmission is trying to engage.
  • A faulty TCM driver can hold the solenoid on continuously, and this is often misdiagnosed as a bad solenoid because the solenoid tests fine when removed.

Can I keep driving with P0767?

You can usually drive the vehicle to a repair shop, but avoid aggressive acceleration and highway speeds because the transmission may not shift properly and could overheat. If the transmission is stuck in a single gear or shifts harshly, limit driving to short distances until the fault is repaired.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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