P27E2 code meaning
Electric/Auxiliary Transmission Fluid Pump B Pressure Too Low
Powertrain system Generic code P27xx codes Check engine light
What P27E2 means
P27E2 flags that the second electric pump, B, delivered too little pressure although it was driven. Nobody publishes this code openly. Where a gearbox carries a pump labelled B, it is often a separate unit on the outside of the case: Audi's bulletin 34-17-25 calls oil pump V553 of the 0CJ, 0CK and 0CL seven-speed twin-clutch boxes pump B and lists P27A3, P27A6 and P276B for it, but not P27E2. CARB 13 CCR 1968.2 requires such actuators to be checked for proper function. Compared with P27A3, which covers no delivery at all, P27E2 points to a pump that works but weakly; P277A singles out hydraulic leakage, P27E1 is the same check on pump A. Expect stop-start or clutch cooling to be restricted.
P27E2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P27E2
- Stop-start no longer stops the engine
- Reduced clutch cooling, power limited when hot
- Warning light on
Common causes of P27E2
- Most likelyPump B worn, motor running but delivering too little
- PossibleLeaking O-ring or pressure line between pump B and the gearbox
- PossibleFluid level too low for pump B to prime
- Less likelyWeak battery or poor ground slowing the pump motor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Aux transmission pump bTransmission fluidValve body
What each part of P27E2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| E2 | The exact fault in that area. |
What to do next
- Note P27E2 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 P27E2
What does P27E2 mean?
P27E2 means "Electric/Auxiliary Transmission Fluid Pump B Pressure Too Low". P27E2 flags that the second electric pump, B, delivered too little pressure although it was driven. It is a generic code, so it means the same on every make.
Is it safe to drive with P27E2?
Drive gently and only to a workshop. With P27E2 the car can go into limp mode (reduced power) to protect itself.
Will P27E2 fail an emissions test?
Yes, it can. P27E2 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 P27E2 to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P27E2 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.