Code result
P0880
TCM Power Input Signal
Moderate severity
What it means
The TCM detects an out-of-range supply voltage at its main power input. Battery voltage is too low or too high during operation.
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
Low battery or alternator fault
highOne of the most commonly reported causes for this code — check this first.
Poor TCM ground
mediumA plausible cause — test and verify before replacing parts.
Related help
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