P2D5D code meaning
Battery Charging System Positive Contactor C Stuck Open
What P2D5D means
P2D5D means positive charging contactor C stays open although it was commanded closed, so the plus pole of that charging path never connects and the session fails right at the start. No manufacturer documents P2D5D publicly; Mazda, which lists the non-closing case for contactor B (P2BC6), says nothing about a C contactor. GM's comparable check for the Volt's plus contactor A (P0D09) illustrates detection: while the charger precharges, its terminal voltage ought to climb; if 8 of 9 readings, spaced 12.5 ms apart, remain under 10 V, the contactor counts as stuck open (Type A). CARB requires plug-in hybrids to detect charger faults that prevent charging. Suspects are burnt contacts, a weak coil feed and a jammed armature. Welding is P2D5C, the minus side P2D64.
P2D5D at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D5D
- Charging in the affected mode does not start
- Charging station reports an aborted session
- Driving not affected
Common causes of P2D5D
- Most likelyContactor C does not pull in (burnt contacts, jammed armature)
- PossibleInsufficient coil supply due to wiring or connector resistance
- Less likelyControl software misjudges the precharge voltage
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs pos contactor cWiring harnessBms
What each part of P2D5D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5D | The exact fault in that area. |
What to do next
- Note P2D5D 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 P2D5D
What does P2D5D mean?
P2D5D means "Battery Charging System Positive Contactor C Stuck Open". P2D5D means positive charging contactor C stays open although it was commanded closed, so the plus pole of that charging path never connects and the session fails right at the start. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D5D?
P2D5D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2D5D fail an emissions test?
P2D5D 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 P2D5D to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P2D5D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.