Powertrain, generic (extended)

P2C10 A Camshaft Profile Actuator Position Sensor C Circuit High Bank 1

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Harness wear at the camshaft carrier cover shorting to a live wire (GM bulletins)
Actuator 3 shorted internally to supply
ECM output stage faulty

Symptoms

  • MIL on immediately
  • No lift change and no cylinder deactivation
  • With harness damage, possibly stalling or no start

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–900
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

a camshaft profile actuator pos sensor c b1wiring harnessecm

Related codes

P2C08P2C0CP2C0DP2C0EP2C0F

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov.