Powertrain
generic / SAE
P25F1
Vacuum Pump Control Circuit B High
Voltage on the secondary vacuum pump control line is above the expected window. Typical causes are a short to battery or an open motor that lets the driver float high.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / F1
Possible causes
- Control wire shorted to a B+ supply high
- Open motor winding or worn brushes medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.8–3 h
- Component: vacuum pump b
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012