P2C94 code meaning
Hybrid/EV Battery Contactor Control Supply Circuit Low
Powertrain system Generic code P2Cxx codes Check engine light
What P2C94 means
P2C94 says the supply feeding the contactor drivers lies below its lower limit. Ford is the maker that documents it: special service messages 51513 and 51783 (2023) describe 2021–2023 Escape, Corsair, Aviator, Mustang Mach-E, F-150 and Transit plug-in models whose AC charging at level 1 or 2 stops with the MIL on and P2C94 logged in the SOBDM, the on-board charger module. As a stopgap the charge handle is unplugged and reconnected; a new SOBDM does not help. TSB 23-2399, extended by 24-2027 to the 2023 E-Transit, blames SOBDM software and cures it by reprogramming. Ford does not say which supply it measures. On other vehicles a genuinely low feed, as described in patent US12007445B2, can stop contactors closing fully. Compare P2C95 for the high side.
P2C94 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2C94
- AC charging stops while plugged in, MIL on
- Charging resumes after unplugging and reconnecting
- Vehicle may not become ready to drive
Common causes of P2C94
- Most likelyOn-board charger (SOBDM) software, Ford TSB 23-2399/24-2027
- PossibleSupply feed pulled down by a weak 12 V battery or poor ground
- Less likelyPartial short or high resistance in the supply wiring
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hybrid battery contactor control supplyWiring harnessBmsOn board charger
What each part of P2C94 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| C | Area: hybrid propulsion. |
| 94 | The exact fault in that area. |
What to do next
- Note P2C94 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 P2C94
What does P2C94 mean?
P2C94 means "Hybrid/EV Battery Contactor Control Supply Circuit Low". P2C94 says the supply feeding the contactor drivers lies below its lower limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C94?
Drive gently and only to a workshop. With P2C94 the car can go into limp mode (reduced power) to protect itself.
Will P2C94 fail an emissions test?
Yes, it can. P2C94 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 P2C94 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2C94 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.