P094DHydraulic Pump Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The hydraulic or electric oil pump, or its integrated controller, has become too hot. The temperature is usually measured on the controller board and the pump is derated or switched off to protect it. No manufacturer documents this exact code publicly. Hyundai lists the same condition for the high-flow pump of its wet 8-speed DCT as P193D4B, over temperature, and P1C2E92 for the high-pressure pump motor control. Kia recalled stop-start oil pump controllers in 2023 because a damaged capacitor could short and overheat the board, harness and connector. CARB requires functional checks on outputs. P094A is the driver fault, P094B a pump that never stops, a common reason for heat build-up.
- What you may notice
- Warning light on
- Stop-start temporarily disabled
- Burning smell near the pump in severe cases
- Likely causes
- LikelyPump running too long because of leakage or a stuck relay
- PossibleDefective pump controller board
- RareVery hot transmission fluid or blocked cooling
- 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.