P00E2 code meaning
Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic
Powertrain system Generic code P00xx codes Check engine light
What P00E2 means
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.
P00E2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P00E2
- Check engine light on
- Reduced power possible
- Often no noticeable symptoms
Common causes of P00E2
- Most likelyWiring harness chafed or fuse blown (documented by manufacturer bulletins)
- Most likelySensor faulty
- PossibleConnector corroded or water ingress
- Less likelyEngine control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Charge air cooler coolant temperature sensorCharge air cooler coolant pumpLow temperature coolant circuitSensor wiring
What each part of P00E2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| E2 | The exact fault in that area. |
What to do next
- Note P00E2 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P00E2
What does P00E2 mean?
P00E2 means "Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P00E2?
Drive gently and only to a workshop. With P00E2 the car can go into limp mode (reduced power) to protect itself.
Will P00E2 fail an emissions test?
Yes, it can. P00E2 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P00E2 to fix?
Difficulty: medium. A typical repair takes 0.5 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P00E2 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.