Code : P0634
Make : All makes
Description : P0634 PCM/ECM/TCM Internal Temperature ‘A’ Too High
Possible causes :
– Obstructions in the airflow of the radiator or transmission cooler
– Kinked or damaged transmission fluid lines
– Damage to the transmission cooler
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.