Powertrain, generic · Fuel and air metering, auxiliary emission controls
P00E2 Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible
With indirect charge air cooling, a water-to-air charge air cooler cools the charge air; it sits in a separate low-temperature coolant circuit with an electric pump and its own radiator. The charge air cooler coolant temperature sensor A measures the coolant temperature of this circuit. The control module uses it to control the pump and to monitor cooling performance. Documented users are diesel engines from Ford and GM. P00E2: The signal jumps or drops out briefly, which typically points to a loose contact or a chafed harness.
Likely causes
Wiring harness chafed or fuse blown (documented by manufacturer bulletins)
Sensor faulty
Connector corroded or water ingress
Engine control module faulty
Symptoms
- Check engine light on
- Reduced power possible
- Often no noticeable symptoms
Repair estimate
DifficultyMediumDIY possible
Parts and labour€100–300
Time0.5–1.5 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
charge air cooler coolant temperature sensorcharge air cooler coolant pumplow temperature coolant circuitsensor wiring
Related codes
References: law.cornell.edu, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.