Powertrain
generic / SAE
P25EF
Vacuum Pump Control Circuit B Range/Performance
The secondary vacuum pump does not produce the expected vacuum within the commanded run time. Leak in the pump line or worn pump diaphragm reduces output.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / EF
Possible causes
- Worn diaphragm or vanes inside the pump high
- Cracked vacuum hose or loose connection medium
- Sensor element aged beyond calibration window low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: vacuum pump b
- Component: vacuum lines
- Component: vacuum sensor
- MIL / check engine light
Sources
References
sae:J2012