OBD Guide

P0931

Gear Shift Lock Solenoid/Actuator Control Circuit A High

P0931 is an OBD-II diagnostic trouble code meaning: Gear Shift Lock Solenoid/Actuator Control Circuit A High. Common causes: short circuit in solenoid circuit, faulty shift lock solenoid. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Difficulty shifting gears
  • Gearbox locked in one gear
  • Check Engine light comes on
  • The car goes into emergency mode
  • Cannot remove the key from the ignition

Causes

  • Short circuit in solenoid circuit
  • Faulty shift lock solenoid
  • Wiring harness damage
  • Problems with the transmission control unit
  • Corrosion of contacts or connectors

How to Fix

  1. Check the integrity of wiring and connectors
  2. Measure the solenoid resistance
  3. Check control circuit voltage
  4. Replace faulty solenoid if necessary
  5. Reset the error code and check the system

Related codes

Error P0931 by Vehicle Brand

FAQ

What does the P0931 code mean?

P0931 is an OBD-II diagnostic trouble code that indicates: Gear Shift Lock Solenoid/Actuator Control Circuit A High

What causes a P0931 error code?

The most common causes of P0931 include: Short circuit in solenoid circuit; Faulty shift lock solenoid; Wiring harness damage; Problems with the transmission control unit.

How do I fix a P0931 diagnostic trouble code?

To fix P0931: Check the integrity of wiring and connectors. Measure the solenoid resistance. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0931?

Yes, but get it checked soon

How much does it cost to fix P0931?

The estimated repair cost for P0931 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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