OBD-II code · Powertrain (generic, extended)
P258A Vacuum Pump Control Circuit A/Open
The control circuit driving the electric vacuum pump (used to maintain brake-booster vacuum on direct-injection or hybrid powertrains where the engine is not always running) is open. The ECM cannot run the pump on demand — booster vacuum drops, pedal feel hardens, brake assist may be reduced.
Is it safe to drive with P258A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen control wire to the pump
- PossibleFailed driver in the control module
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Vacuum Pump, Wiring Harness
Related codes
- P2587Turbocharger Boost Control Position Sensor B Circuit Range/Performance
- P2588Turbocharger Boost Control Position Sensor B Circuit Low
- P2589Turbocharger Boost Control Position Sensor B Circuit High
- P258BVacuum Pump Control Circuit A Range/Performance
- P258CVacuum Pump Control Circuit A Low
- P258DVacuum Pump Control Circuit A High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.