Powertrain
generic / SAE
P0889
TCM Power Relay Sense Circuit Range/Performance
The TCM power relay reports a sense circuit range/performance condition. TCM supply control is impaired.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 89
Possible causes
- Contact resistance drifted high
- Feedback voltage drifted medium
- Sensor element aged beyond calibration window low
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–600 €
- Estimated time: 0.5–3 h
- Component: tcm power relay
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012