P063FAuto Configuration Engine Coolant Temperature Input Not Present
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Some modules configure themselves at start-up by detecting which inputs are present. P063F means the module expects a coolant temperature input but does not detect it during this self-configuration. It differs from the circuit codes P0117/P0118 (signal low/high) and the plausibility codes P0116, P0125 and P0128, which judge a present signal. No manufacturer document or patent available to us describes this check; the explanation is derived from the J2012 wording. CARB requires the coolant temperature sensor to be monitored for circuit, range and warm-up. Possible causes are an unplugged NTC sensor, an open wire or software for a different vehicle. Expect a substitute temperature, a constantly running fan, a dead temperature gauge and poorer cold starts.
- What you may notice
- Check engine light
- Radiator fan runs constantly
- Temperature gauge not working
- Poor cold start, higher consumption
- Likely causes
- PossibleCoolant temperature sensor not connected, connector or wire open
- PossibleWrong module software or variant
- RareFaulty sensor
- RareInternal module fault
- 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: €30 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.