P01E6Engine Coolant Temperature Sensor 3 Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Coolant temperature sensor 3 is a third NTC coolant sensor on engines with thermal management or split cooling circuits; its position is defined by the manufacturer – on Jaguar Land Rover's 2018–2019 Ingenium petrol engines it sits in the engine block water jacket, on Audi's 3.0 TFSI V6 it is part of the thermal management. As with every NTC sensor, a low signal voltage means hot and a high one cold. CARB requires such additional sensors to be monitored from model year 2019 onwards. P01E6 means the signal voltage sits near the reference, so the module would read very cold coolant (around −40 °C) – typically an open signal or ground wire, a loose connector with poor terminal tension, an open sensor or a short to voltage. Jaguar Land Rover documents the code on its 2018–2019 Ingenium petrol engines and has the wiring checked first, then the sensor replaced.
- What you may notice
- Check engine light on
- Coolant temperature or cooling fan behaviour possibly affected
- Often no change in driving
- Likely causes
- LikelySignal or ground wire open, connector loose, poor terminal tension
- LikelySensor open internally
- PossibleSignal wire shorted to 5 V or 12 V
- RareControl module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €40 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.