OBD-II code · Powertrain (generic, extended)
P274A Transmission Fluid Temperature Sensor C Circuit
The third transmission fluid temperature sensor returns no usable signal.
Is it safe to drive with P274A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen sensor element or broken sensor wire
- PossibleCorroded sensor connector
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Trans Fluid Temp Sensor C, Wiring Harness
Related codes
- P0710Transmission Fluid Temperature Sensor A Circuit
- P2740Transmission Fluid Temperature Sensor B Circuit
- P275ATransmission Fluid Temperature Sensor D Circuit
- P2747Intermediate Shaft Speed Sensor B Circuit No Signal
- P2748Intermediate Shaft Speed Sensor B Circuit Intermittent
- P2749Intermediate Shaft Speed Sensor C Circuit
- P274BTransmission Fluid Temperature Sensor C Circuit Range/Performance
- P274CTransmission Fluid Temperature Sensor C Circuit Low
- P274DTransmission Fluid Temperature Sensor C Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.