Powertrain
generic / SAE
P094B
Hydraulic Pump Stuck On
The hydraulic pump reports a stuck on condition. Pump operation is impaired.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number9 / 4B
Possible causes
- Pump relay contacts welded high
- Driver stuck on medium
- Carbon or debris buildup preventing free movement 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: hard
- DIY: shop recommended
- Estimated cost: 400–2500 €
- Estimated time: 2–8 h
- Component: hydraulic pump
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012