P2C0C code meaning
A Camshaft Profile Actuator Position Sensor B Circuit High Bank 1
Powertrain system Generic code P2Cxx codes Check engine light
What P2C0C means
A short from the sensor B line to a voltage source triggers P2C0C. The sensor is the Hall feedback built into the second intake profile actuator on bank 1. For the L3B four in 2019 and later Silverado and Sierra 1500 trucks, GM tests with the output stage off; a reading of no more than 0.5 ohm against controller power, found four times in five checks while the supply exceeds 11 V and the key is in crank or run, gives a Type A code with MIL in the first trip (19OBDG03D, 25OBDG03B). Bulletins PIT5677 and 21-NA-149 include P2C0C in their main list for harness chafing at the camshaft carrier, the air cleaner housing and the left shock tower, where blown fuses can accompany the codes. An actuator whose position cannot be read is excluded from shifting. Ground short: P2C0B, open: P2C09.
P2C0C 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 P2C0C
- MIL on in the first trip
- Cam profile switching and cylinder deactivation unavailable
- With harness damage, further codes, rough running or no start
Common causes of P2C0C
- Most likelyChafed harness bringing the line against a powered wire (GM PIT5677, 21-NA-149)
- PossibleInternal short to supply in actuator 2
- Less likelyECM output stage defective
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 b b1Wiring harnessECM
What each part of P2C0C 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. |
| 0C | The exact fault in that area. |
What to do next
- Note P2C0C 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 P2C0C
What does P2C0C mean?
P2C0C means "A Camshaft Profile Actuator Position Sensor B Circuit High Bank 1". A short from the sensor B line to a voltage source triggers P2C0C. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C0C?
Drive gently and only to a workshop. With P2C0C the car can go into limp mode (reduced power) to protect itself.
Will P2C0C fail an emissions test?
Yes, it can. P2C0C 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 P2C0C to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2C0C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.