P2E99 code meaning
Charge Port Door B Position Sensor Circuit Performance
What P2E99 means
P2E99 means the position signal of charge flap B is within its electrical limits yet contradicts what the flap is doing, for instance closed although the flap was just opened. On cars with two flaps such an error has side effects, because the flaps lock each other: Porsche found on the 2020 Taycan that a bad sensor signal led to a wrong end-position decision, which then blocked the flap on the other side, and replaced both flap harnesses (campaign WLK2); a GM patent describes the same interlock with a magnet sensor per door. Audi reports two e-tron GT cases where a closed flap was read as open: a faulty actuator with oxidation or particles (2064953/4) and, later, cockpit software (2079475/1). No manufacturer ties these to P2E99 publicly. Pure circuit faults belong to P2E98, P2E9A and P2E9B.
P2E99 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2E99
- Message asking to close a charging flap although both are closed
- Opposite flap A locked and not operable
- Charging refused
Common causes of P2E99
- Most likelyPosition sensor or its harness giving a wrong end-position signal
- PossibleOxidation or particles in the flap actuator that houses the detection
- PossibleSoftware misreading the flap state at start-up
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Charge port door b position sensorCharge port door b unlock actuatorWiring harness
What each part of P2E99 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 99 | The exact fault in that area. |
What to do next
- Note P2E99 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 P2E99
What does P2E99 mean?
P2E99 means "Charge Port Door B Position Sensor Circuit Performance". P2E99 means the position signal of charge flap B is within its electrical limits yet contradicts what the flap is doing, for instance closed although the flap was just opened. It is a generic code, so it means the same on every make.
Is it safe to drive with P2E99?
P2E99 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2E99 fail an emissions test?
P2E99 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 P2E99 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2E99 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.