P2C93 code meaning
Hybrid/EV Battery Contactor Control Supply Circuit Range/Performance
Powertrain system Generic code P2Cxx codes Check engine light
What P2C93 means
With P2C93 the supply for the contactor drivers is present but does not behave as it should: it sags when a coil is switched on, ripples, or recovers too slowly before the next contactor in the closing sequence. A high-resistance contact or a weak feed therefore shows up here rather than as an open circuit. LG Energy Solution patent US12007445B2 describes the matching logic: before every contactor closes, the controller compares the supply with a minimum, waits and repeats the comparison if it is short, and only after a set number of failed tries records a supply fault. No manufacturer documents P2C93 publicly. For the driver the effect is often intermittent: the car may need several attempts to become ready or abort charging. CARB requires functional checks of hybrid components.
P2C93 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P2C93
- Several attempts needed before the vehicle is ready
- Charging stops unexpectedly
- Intermittent hybrid or EV warning
Common causes of P2C93
- Most likelyCorroded or loose contact in the supply feed causing voltage drop
- PossibleWeak 12 V battery or ground connection sagging under coil load
- Less likelyContactor coil drawing excessive current or driver stage faulty
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 harnessBms
What each part of P2C93 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. |
| 93 | The exact fault in that area. |
What to do next
- Note P2C93 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 P2C93
What does P2C93 mean?
P2C93 means "Hybrid/EV Battery Contactor Control Supply Circuit Range/Performance". With P2C93 the supply for the contactor drivers is present but does not behave as it should: it sags when a coil is switched on, ripples, or recovers too slowly before the next contactor in the closing sequence. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C93?
Drive gently and only to a workshop. With P2C93 the car can go into limp mode (reduced power) to protect itself.
Will P2C93 fail an emissions test?
Yes, it can. P2C93 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 P2C93 to fix?
Difficulty: hard. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P2C93 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.