Powertrain
generic / SAE
P0C20
Electric/Auxiliary Transmission Fluid Pump Phase U-V-W Circuit/Open
The auxiliary transmission fluid pump phase U-V-W output reports a circuit/open condition.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 20
Possible causes
- Open phase wire high
- Open motor winding medium
- Pin pushed back out of connector body 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: 500–2500 €
- Estimated time: 2–8 h
- Component: aux trans pump phase uvw
- Component: aux trans pump inverter
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012