Powertrain
generic / SAE
P258B
Vacuum Pump Control Circuit A Range/Performance
The vacuum pump control circuit is electrically intact, but the pump response does not match the model — pump runs longer than expected to reach setpoint, current draw rises (mechanically tight) or vacuum does not build at all. Aged motor brushes, dry vanes or a leaking line are typical causes.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 8B
Possible causes
- Aged motor brushes or dry vanes high
- Leaking vacuum line medium
- Sensor element aged beyond calibration window low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 0.5–2.5 h
- Component: vacuum pump
- Component: vacuum lines
- MIL / check engine light
Sources
References
sae:J2012