Powertrain
generic / SAE
P0B09
Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit/Open
The supply voltage circuit of auxiliary transmission fluid pump A motor reports a open condition.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / 09
Possible causes
- Open in supply wire high
- Supply fuse blown 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: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–5 h
- Component: aux trans pump a motor
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012