P274F code meaning
Transmission Fluid Temperature Sensor C Over Temperature Condition
What P274F means
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.
P274F at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P274F
- Overheating warning
- Limited torque or altered shifting
Common causes of P274F
- Most likelyHigh load or heavy clutch slip
- PossibleRestricted oil flow or clogged cooler
- PossibleLow or worn-out fluid
- Less likelySensor C reading too hot within range
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Trans fluid temp sensor cTransmission fluidCooler
What each part of P274F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 4F | The exact fault in that area. |
What to do next
- Note P274F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P274F
What does P274F mean?
P274F means "Transmission Fluid Temperature Sensor C Over Temperature Condition". P274F means sensor C reports a plausible value that is nevertheless above the overheat limit set in the calibration. It is a generic code, so it means the same on every make.
Is it safe to drive with P274F?
Drive gently and only to a workshop. With P274F the car can go into limp mode (reduced power) to protect itself.
Will P274F fail an emissions test?
P274F is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P274F to fix?
Difficulty: medium. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P274F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.