P0E6B code meaning
Battery Charging System Precharge Contactor Circuit Stuck Closed
What P0E6B means
P0E6B means the precharge contactor of the charging system appears to stay closed although it has been told to open, usually because its contacts have welded. The battery management notices this when the charger side carries voltage before any precharge was requested, or when it does not drop after switch-off. That is a safety matter: the charging path may remain live. No manufacturer documents P0E6B publicly. Mitsubishi's i-MiEV manual, published as a 2019 bulletin, handles the comparable weld of its charging contactor under P0AE2 and checks it as the high-voltage system is activated; besides wiring and the contactor itself it lists the combined charger and DC-DC unit and other high-voltage loads as possible causes. CARB requires faults that disable charging to be detected. The opposite fault is P0E6C.
P0E6B at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E6B
- Charging blocked and high-voltage warning displayed
- Vehicle may refuse to switch to ready mode
Common causes of P0E6B
- Most likelyPrecharge contactor contacts welded together
- Less likelyCoil kept energised by a control line fault
- Less likelyResidual voltage from another high-voltage unit misread as a closed contactor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Precharge contactorPrecharge resistorBms
What each part of P0E6B means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6B | The exact fault in that area. |
What to do next
- Note P0E6B 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 P0E6B
What does P0E6B mean?
P0E6B means "Battery Charging System Precharge Contactor Circuit Stuck Closed". P0E6B means the precharge contactor of the charging system appears to stay closed although it has been told to open, usually because its contacts have welded. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E6B?
Drive gently and only to a workshop. With P0E6B the car can go into limp mode (reduced power) to protect itself.
Will P0E6B fail an emissions test?
P0E6B is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0E6B to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 6 hours of work. This is a job for a workshop.
Will P0E6B clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.