P06E8 code meaning
Sensor Power Supply C Circuit High
Powertrain system Generic code P06xx codes Check engine light
What P06E8 means
'Sensor power supply' is a separate J2012 family next to the 5 V sensor reference (P0697 ff): an additional supply from the module for sensors or drivers – in GM hybrids a 15 V supply for resolvers and inverter gate drivers, there as supplies A and B. Supply C is a third such circuit. P06E8 means the voltage of supply C is too high – external voltage, a short to positive or a regulator fault; Mitsubishi marks it as a short-to-battery sub-code. Open circuit and low are P06E6/P06E7. Only Mitsubishi's 2022 Outlander lists P06E6 as a main code with sub-codes for low and high, called internal control module, without thresholds or the sensors fed. All sensors on the circuit then deliver invalid values, so several follow-up codes and limp mode are possible.
P06E8 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P06E8
- Check engine light
- Several sensor codes at the same time
- Limp mode or reduced power possible
- Possibly starting problems or rough running
Common causes of P06E8
- Most likelyShort to positive in the supply wire or a supplied sensor
- PossibleSupply regulator inside the module faulty
- Less likelyVehicle overvoltage (alternator)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Sensor power supply circuitEngine control module
What each part of P06E8 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6 | Area: computer (engine control module) and output circuits. |
| E8 | The exact fault in that area. |
What to do next
- Note P06E8 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 P06E8
What does P06E8 mean?
P06E8 means "Sensor Power Supply C Circuit High". 'Sensor power supply' is a separate J2012 family next to the 5 V sensor reference (P0697 ff): an additional supply from the module for sensors or drivers – in GM hybrids a 15 V supply for resolvers and inverter gate drivers, there as supplies A and B. It is a generic code, so it means the same on every make.
Is it safe to drive with P06E8?
Drive gently and only to a workshop. With P06E8 the car can go into limp mode (reduced power) to protect itself.
Will P06E8 fail an emissions test?
Yes, it can. P06E8 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 P06E8 to fix?
Difficulty: medium. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P06E8 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.