P274B

Transmission Fluid Temperature Sensor C Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Enabling transmission emergency mode
Check Engine Light Illuminates
Decreased fuel efficiency
Transmission fluid overheating

Causes

Transmission fluid temperature sensor fault C
Open or short circuit in the sensor circuit
Poor contact in wiring connectors
Transmission control module (TCM) problems
Low or contaminated transmission fluid

How to Fix

Check the level and condition of the transmission fluid
Inspect the sensor wiring and connectors for damage
Check the resistance of the temperature sensor
Scan the transmission control module for other codes
If necessary, replace the transmission fluid temperature sensor

Related codes

P274A P274C P0711