Error code
OBD2 P0889
OBD2P0889
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
TCM Power Relay Sense Circuit Range/Performance.
Severity
moderateCan drive, but shifting issues may occur.
Summary
P0889 indicates an issue with the power relay sense circuit in the transmission control module (TCM), which is responsible for monitoring the relay's operation.
Common Causes
- Poor wiring connection
- Faulty TCM power relay
- Defective TCM
Fixes
- Inspect and repair wiring connections. Replace faulty relay or TCM if necessary.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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