P274D

Transmission Fluid Temperature Sensor C Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Activating transmission emergency mode
Check Engine Light Illuminates
Reduced transmission efficiency
Unusual transmission behavior

Causes

Transmission fluid temperature sensor fault C
Open or short circuit in the sensor circuit
Poor connection or corrosion in connectors
Wiring Harness Problems
Transmission control module (TCM) malfunction

How to Fix

Check the condition of the transmission fluid temperature sensor C
Check the integrity of the sensor circuit and connection
Check connectors for corrosion or damage
Check the sensor resistance and compare with standardized values
If necessary, replace the sensor or repair the wiring

Related codes

P274C P274E P0711