P011E
Engine Coolant Temperature 1 / Ambient Air Temperature Correlation
Engine Coolant Temperature 1 / Ambient Air Temperature Correlation: the value does not correlate with the related sensor or expected pattern.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Common causes
Ordered by how often each turns out to be the cause.
- One sensor driftedCommon
Parts involved
- ECT Sensor 1
- Ambient Air Temp Sensor
P011E is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.