Fault Code P0886
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0886
TCM Power Relay Control Circuit Low
This code indicates an unexpectedly low voltage in the control circuit of the Transmission Control Module (TCM) power relay. This prevents the relay from closing and supplying power to the TCM.
Part Details
Part Name
TCM Relay
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪150 - ₪700
Engine Location
Fuse box/Engine compartment
Symptoms
- Vehicle won't start or move
- Transmission unresponsive
- Check Engine Light illuminated
- No communication with TCM
Possible Causes
- 1Short to ground in control circuit
- 2Faulty TCM relay
- 3Wiring issues (e.g., high resistance)
- 4ECM or TCM failure
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