P077E

Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Gear shifting with jerks or delays
Activating emergency transmission mode
The Check Engine light comes on
Reduced transmission efficiency
Incorrect temperature readings on the scan tool

Causes

Transmission fluid temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Contaminated or low transmission fluid level
Transmission control module (TCM) malfunction

How to Fix

Check the level and condition of the transmission fluid
Diagnose temperature sensors using a scanner
Check the integrity of the wiring and contacts in the sensor circuit
Replace faulty temperature sensors
If necessary, diagnose or replace the TCM control unit

Related codes

P0717 P0718 P0722 P0723