P2182
Engine Coolant Temperature Sensor 2 Circuit
A general electrical fault is reported on engine coolant temperature sensor 2 — open, shorted, or out of plausibility. Sensor 2 is typically at the radiator outlet or as redundancy on the second cylinder bank.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
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.
- Sensor failedCommon
- Harness faultPossible
Parts involved
- Engine Coolant Temperature Sensor 2
P2182 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.