P0887
TCM Power Relay Control Circuit High
P0887 is an OBD-II diagnostic trouble code meaning: TCM Power Relay Control Circuit High. Common causes: faulty tcm power relay, damage to the control circuit wiring harness. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- The transmission goes into emergency mode
- Gear shift limitation
- Fixation in one gear
- Reduced engine power
Causes
- Faulty TCM power relay
- Damage to the control circuit wiring harness
- Short circuit to ground
- TCM power problems
- Malfunction of the TCM module itself
How to Fix
- Check the condition of the TCM power relay
- Inspect the wiring harness for damage
- Check control circuit voltage
- Test the circuit for short circuit
- Replace relay or TCM if necessary
Related codes
Error P0887 by Vehicle Brand
FAQ
What does the P0887 code mean?
P0887 is an OBD-II diagnostic trouble code that indicates: TCM Power Relay Control Circuit High
What causes a P0887 error code?
The most common causes of P0887 include: Faulty TCM power relay; Damage to the control circuit wiring harness; Short circuit to ground; TCM power problems.
How do I fix a P0887 diagnostic trouble code?
To fix P0887: Check the condition of the TCM power relay. Inspect the wiring harness for damage. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0887?
Limited driving only, diagnose soon
How much does it cost to fix P0887?
The estimated repair cost for P0887 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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