C0250Power Steering Pump Pressure
- Generic OBD-II code · Chassis
- How the car detects it
- C0250 is publicly unverifiable: neither the reachable J2012 lists, nor NHTSA's bulletin index, nor GM's PIP5094 keywords, nor the Saab manuals contain it. What can be described is the part named in the title. On hydraulic power steering a pressure switch or sensor at the pump outlet tells the engine control when steering adds load. Chrysler's patent US6152106 uses a voltage-output sensor so the idle air control can open earlier and avoid idle dips while parking. Mazda's patent US6012541 shows a plausibility test: a switch that stays closed for 60 s at over 60 km/h with warm fluid is judged stuck, because nobody steers that long at speed. For the electrical faults of such a sensor, the powertrain codes P0550 to P0554 exist.
- What you may notice
- Idle speed dips or stalls when steering at standstill
- Warning lamp or stored code without noticeable steering change
- Likely causes
- PossibleFaulty or stuck power steering pressure sensor or switch
- PossibleDamaged wiring or connector at the pressure sensor
- RareLow fluid level or worn pump giving abnormal pressure
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.