P2088"A" Camshaft Position Actuator Control Circuit Low (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2088 concerns the control line of the oil control valve that moves the intake cam phaser (actuator A) on bank 1. On GM engines the ECM feeds the solenoid through a high-side driver; while the output is switched on, a voltage that falls below the controller window means the line has a path to ground (equivalent to less than 0.5 ohms). GM samples every 250 ms and sets the code after 20 failures in 25 samples, as a Type B fault on the 5.3 L L84 (19OBDG03B). GM bulletins PIP5553 (2018) and PIP5724 (2020) link P2088 and P2089 on V8 and V6 trucks and the Camaro to a jumper harness chafed or pinched at connector X154 on the lower left of the front cover. On many Fords open and shorted phaser circuits all land in P0010. The phaser then stays locked in its rest position.
- What you may notice
- Engine warning lamp on
- Less pull and higher consumption with cam timing fixed
- Rough idle on some engines
- Likely causes
- LikelyControl wire chafed through to ground, e.g. GM jumper harness at connector X154
- PossibleOil control valve coil shorted internally
- RareEngine oil wicked into the valve connector
- RareDamaged output driver in the ECM
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.