Powertrain
generic / SAE
P022C
Charge Air Cooler Bypass Control A Circuit High
CAC bypass control A voltage above expected range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number2 / 2C
Possible causes
- Wiring shorted to battery high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: cac bypass valve a
- Component: actuator wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012