P274FTransmission Fluid Temperature Sensor C Over Temperature Condition
- Generic OBD-II code · Powertrain
- Can trigger limp mode
- How the car detects it
- P274F means sensor C reports a plausible value that is nevertheless above the overheat limit set in the calibration. It is a condition report rather than a circuit defect, and no manufacturer documents its threshold or the location of sensor C publicly. For the main sensor the equivalent is P0218, which Saab's Aisin gearbox stores at over 170 °C held longer than 10 s. Depending on where C measures – for example at a clutch pack or in a cooler line – the trigger may be a heavily loaded clutch or a restricted oil flow rather than overall sump heat. Expect protective measures such as torque limits or a changed shift pattern; let the unit cool, then check fluid level, condition and the cooling circuit.
- What you may notice
- Overheating warning
- Limited torque or altered shifting
- Likely causes
- LikelyHigh load or heavy clutch slip
- PossibleRestricted oil flow or clogged cooler
- PossibleLow or worn-out fluid
- RareSensor C reading too hot within range
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.