Powertrain, generic (extended)

P2C0F A Camshaft Profile Actuator Position Sensor C Circuit Low Bank 1

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P2C0F the ECM sees the position sensor C circuit of bank 1, the Hall feedback in the third intake actuator, connected to ground. In GM's L3B tables the test runs while the output is commanded on and looks for a signal-to-ground resistance not above 0.5 ohm; after 4 failures in 5 samples at more than 11 V the code is stored as Type A and the MIL lights at once (19OBDG03D; the 2025 table 25OBDG03B keeps the same limit). Of GM's harness bulletins, only the keyword section of PIT5677 and 21-NA-149 mentions P2C0F, while their main lists carry the open and high codes of this sensor. A pinched wire against the cylinder head or a shorted actuator is the probable cause; lift switching remains blocked. Open: P2C0D, high: P2C10.

Likely causes

Sensor C line pinched or chafed against ground
Internal ground short in actuator 3
Contaminated or damaged connector pins

Symptoms

  • Check engine light comes on during the first drive
  • Engine no longer switches cam profile or deactivates cylinders

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

P2C07P2C0BP2C0DP2C0EP2C10

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