Powertrain
generic / SAE
P258C
Vacuum Pump Control Circuit A Low
The electric vacuum pump control circuit reads stuck low — short to ground or low-side driver stuck on. The pump may run continuously, drawing current and overheating, until the ECM disables the channel.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 8C
Possible causes
- Control wire shorted to ground high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–700 €
- Estimated time: 0.5–2.5 h
- Component: vacuum pump
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012