P0889: TCM Power Relay Sense Circuit Range/Performance
MediumPowertrainTransmission
What does P0889 mean?
P0889 is a diagnostic trouble code indicating "TCM Power Relay Sense Circuit Range/Performance". The sensor or component is providing readings, but they fall outside the expected operating range. The part may be degraded, contaminated, or experiencing intermittent issues affecting transmission performance.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Intermittent warning lights
- Erratic gauge readings
Estimated repair cost
Typical range in Australia (parts + labour)
$100 – $500 AUD
Common causes
- Worn or contaminated transmission component
- Vacuum leak or intake air leak
- Clogged filter or restricted flow
- Intermittent electrical connection issue
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code P0889 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.