Fault Code P0889
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0889
TCM Power Relay Sense Circuit Low
This code indicates an unexpectedly low voltage in the sense circuit of the Transmission Control Module (TCM) power relay. This suggests the TCM is not receiving sufficient power or the sense circuit is faulty.
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 sense circuit
- 2Faulty TCM relay
- 3Wiring issues (e.g., high resistance)
- 4Blown fuse
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