Code result
P0634
Control Module Internal Temperature A Too High
Moderate severity
What it means
Control Module Internal Temperature A Too High: the control module has detected this fault condition.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Heat soak around ECU
highOne of the most commonly reported causes for this code — check this first.
Related help
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