Code result
P0790
Normal/Performance Switch Circuit Malfunction
High severity
What it means
General electrical fault on the Normal/Performance shift-pattern selector switch — lets the driver toggle between a comfort-oriented and a sport-oriented shift map. Without a valid input the TCM defaults to the Normal map.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Open or shorted switch wire
highOne of the most commonly reported causes for this code — check this first.
Related help
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