Powertrain
generic / SAE
P0845
Transmission Fluid Pressure Sensor/Switch B Circuit
Electrical fault on the transmission fluid pressure sensor B circuit. Sensor B monitors a secondary hydraulic circuit such as a clutch line.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 45
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 b
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012