P094A code meaning
Hydraulic Pump Driver Performance
Powertrain system Generic code P09xx codes Check engine light
What P094A means
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.
P094A 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 P094A
- Warning light on
- Auto stop-start disabled
- Delayed engagement or slower shifts
Common causes of P094A
- Most 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
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hydraulic pumpWiring harnessTCM
What each part of P094A 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. |
| 4A | The exact fault in that area. |
What to do next
- Note P094A 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 P094A
What does P094A mean?
P094A means "Hydraulic Pump Driver Performance". Concerns the electronic driver that powers the motor of a hydraulic or electric oil pump, often a separate pump controller. It is a generic code, so it means the same on every make.
Is it safe to drive with P094A?
Drive gently and only to a workshop. With P094A the car can go into limp mode (reduced power) to protect itself.
Will P094A fail an emissions test?
Yes, it can. P094A 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 P094A to fix?
Difficulty: hard. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P094A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.