2017-10-10
Illuminated check engine light
Abnormal shifting behavior
Delayed or harsh shifting
Reduced fuel economy
Faulty transmission fluid temperature sensor
Open or short circuit in the sensor wiring
Failed transmission control module (TCM)
Low transmission fluid level
Transmission Fluid Temperature Sensor: Gear fluid line delivers gear fluid/oil between the various gear parts that need lubrication. The Gear fluid temperature sensor monitors the fluid temperature in the line. Problems lead to difficulty in shifting gears
Replace the transmission fluid temperature sensor
Check and repair any damaged wiring or connections
Add or change transmission fluid to the correct level
Replace the transmission control module (TCM) if necessary