Technical Definition:

Powertrain Control Module (PCM) / Engine Control Module (ECM) / Transmission Control Module (TCM) Internal Temperature Too High

Trouble Code: P0634
Address: 0x0634
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Technical Description:

Possible Causes:

Possible Symptoms:

PCM/ECM/TCM Internal Temperature “A” Too High

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

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