Powertrain
generic / SAE
P25EE
Vacuum Pump Control Circuit B / Open
The controller cannot drive the secondary electric vacuum pump (B). Brake servo or HVAC actuators that depend on engine vacuum may not get enough vacuum during low-load operation or with engine off in stop-start mode.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / EE
Possible causes
- Open pump motor winding or worn brushes high
- Broken control wire between ECU and pump medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 1–3 h
- Component: vacuum pump b
- Component: pump relay
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012