Powertrain
generic / SAE
P0942
Hydraulic Pressure Unit
The TCM detects a generic fault in the hydraulic pressure unit. Pump output, pressure regulation, or accumulator function impaired.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number9 / 42
Possible causes
- Hydraulic pump worn high
- Internal leakage 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: hard
- DIY: shop recommended
- Estimated cost: 500–3000 €
- Estimated time: 3–10 h
- Component: hydraulic pressure unit
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012