P2C10 code meaning
A Camshaft Profile Actuator Position Sensor C Circuit High Bank 1
Powertrain system Generic code P2Cxx codes Check engine light
What P2C10 means
P2C10 completes the sensor C group for the bank 1 intake camshaft: the feedback line of the third profile actuator is shorted to voltage. GM's L3B logic switches the output off and checks the line against controller power; 0.5 ohm or less in 4 of 5 samples, with supply above 11 V, sets a Type A code and the MIL straight away (19OBDG03D, 25OBDG03B). The code appears in the main DTC list of GM bulletins PIT5677 and 21-NA-149, which trace no-start, rough running and reduced power on 2019 to 2021 L3B Silverado and Sierra 1500 to harness wear at the camshaft carrier cover and nearby brackets, sometimes with blown fuses. No other maker documents the code publicly. Until repaired, actuator 3 takes no part in lift changes. Open: P2C0D, ground short: P2C0F.
P2C10 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2C10
- MIL on immediately
- No lift change and no cylinder deactivation
- With harness damage, possibly stalling or no start
Common causes of P2C10
- Most likelyHarness wear at the camshaft carrier cover shorting to a live wire (GM bulletins)
- PossibleActuator 3 shorted internally to supply
- Less likelyECM output stage faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
A camshaft profile actuator pos sensor c b1Wiring harnessECM
What each part of P2C10 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. |
| 10 | The exact fault in that area. |
What to do next
- Note P2C10 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 P2C10
What does P2C10 mean?
P2C10 means "A Camshaft Profile Actuator Position Sensor C Circuit High Bank 1". P2C10 completes the sensor C group for the bank 1 intake camshaft: the feedback line of the third profile actuator is shorted to voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C10?
Drive gently and only to a workshop. With P2C10 the car can go into limp mode (reduced power) to protect itself.
Will P2C10 fail an emissions test?
Yes, it can. P2C10 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 P2C10 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2C10 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.