Powertrain
generic / SAE
P0870
Transmission Fluid Pressure Sensor/Switch C Circuit
Electrical fault on the transmission fluid pressure sensor C circuit. Sensor C typically monitors a third hydraulic clutch or band line.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 70
Possible causes
- Sensor failed high
- Wiring fault medium
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: 200–900 €
- Estimated time: 1–4 h
- Component: transmission fluid pressure sensor c
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012