P094D code meaning
Hydraulic Pump Over Temperature
Powertrain system Generic code P09xx codes Check engine light
What P094D means
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.
P094D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P094D
- Warning light on
- Stop-start temporarily disabled
- Burning smell near the pump in severe cases
Common causes of P094D
- Most likelyPump running too long because of leakage or a stuck relay
- PossibleDefective pump controller board
- Less likelyVery hot transmission fluid or blocked cooling
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hydraulic pumpTCM
What each part of P094D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9 | Area: transmission. |
| 4D | The exact fault in that area. |
What to do next
- Note P094D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P094D
What does P094D mean?
P094D means "Hydraulic Pump Over Temperature". The hydraulic or electric oil pump, or its integrated controller, has become too hot. It is a generic code, so it means the same on every make.
Is it safe to drive with P094D?
Drive gently and only to a workshop. With P094D the car can go into limp mode (reduced power) to protect itself.
Will P094D fail an emissions test?
Yes, it can. P094D is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P094D to fix?
Difficulty: hard. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P094D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.