P2D6A code meaning
Battery Charging System Positive Contactor D Stuck Closed
What P2D6A means
P2D6A reports that positive charging contactor D still conducts after being told to open, nearly always because its contacts have welded. No manufacturer documents P2D6A publicly. A Ford patent explains where welds come from and how they are found: of the two charge contactors, the one closing last completes the circuit and takes the arcing, so Ford alternates the closing order between sessions. After charging, that last one is opened first and, once the charger-side voltage has had time to decay, is judged welded if that voltage still roughly equals the battery voltage. A single weld ends charging until repair; with both poles welded the car will not drive either. P2D6B is the opposite fault, P2D71 the minus side, P2D5C the C twin.
P2D6A at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D6A
- Charging locked after the previous session
- Vehicle may not become ready if the other pole is welded too
- Fault appears at the end of a charging session
Common causes of P2D6A
- Most likelyContacts of plus contactor D welded by arcing
- Less likelyCoil kept energised by a faulty output stage
- Less likelyFaulty charger-side voltage measurement simulating a weld
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs pos contactor dWiring harnessBms
What each part of P2D6A means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6A | The exact fault in that area. |
What to do next
- Note P2D6A 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 P2D6A
What does P2D6A mean?
P2D6A means "Battery Charging System Positive Contactor D Stuck Closed". P2D6A reports that positive charging contactor D still conducts after being told to open, nearly always because its contacts have welded. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D6A?
Drive gently and only to a workshop. With P2D6A the car can go into limp mode (reduced power) to protect itself.
Will P2D6A fail an emissions test?
P2D6A 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 P2D6A to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P2D6A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.