P094AHydraulic Pump Driver Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Concerns the electronic driver that powers the motor of a hydraulic or electric oil pump, often a separate pump controller. The driver reports, or the module infers, that it cannot deliver the commanded speed or current although the circuit is not open or shorted. No manufacturer documents this exact code publicly. Hyundai shows what such a driver monitors on its wet 8-speed DCT pumps: overcurrent, current and Hall sensor faults and internal faults, filed under its own P193D and P1C2E codes. Mercedes reports an internal fault of the 722.9 auxiliary oil pump under P0944 instead. CARB requires functional checks on outputs. P094B and P094C are stuck pump faults, P094D overheating, P094E supply; P0C29 is the equivalent for auxiliary fluid pumps of automatics.
- What you may notice
- Warning light on
- Auto stop-start disabled
- Delayed engagement or slower shifts
- Likely causes
- LikelyInternal fault of the pump controller or driver stage
- PossiblePump motor drawing excess current (worn bearings, fluid in motor)
- PossibleHigh resistance in supply or ground of the driver
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €200 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.