P27E6 code meaning
Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High
Powertrain system Generic code P27xx codes Check engine light
What P27E6 means
P27E6 means the control valve circuit of the auxiliary pump reads higher than allowed, as if the line were tied to battery voltage. A wire rubbing against a live conductor in the same harness, or a driver stage that no longer switches off, are the classic triggers. The code is not documented by any manufacturer in public. As a model of the hardware, VW's 0GC and 09P training books describe an electric pump V475 whose oil is steered by a pressure-regulated changeover valve; a permanently energized drive would hold that valve in one position. CARB 13 CCR 1968.2 calls for detecting such shorts. Because the valve cannot be released, the module typically disables stop-start. Low is P27E5, open circuit P27E3.
P27E6 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P27E6
- Stop-start inoperative
- Warning light on, possibly further pump codes
Common causes of P27E6
- Most likelyControl line shorted to a supply wire in the harness
- PossibleCorrosion bridging adjacent pins in the connector
- Less likelyOutput stage in the control module stuck on
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Aux transmission pump control valveWiring harnessTCM
What each part of P27E6 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. |
| E6 | The exact fault in that area. |
What to do next
- Note P27E6 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 P27E6
What does P27E6 mean?
P27E6 means "Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High". P27E6 means the control valve circuit of the auxiliary pump reads higher than allowed, as if the line were tied to battery voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P27E6?
Drive gently and only to a workshop. With P27E6 the car can go into limp mode (reduced power) to protect itself.
Will P27E6 fail an emissions test?
Yes, it can. P27E6 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 P27E6 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P27E6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.