Code result
P0881
TCM Power Input Signal Range/Performance
High severity
What it means
The power input signal to the Transmission Control Module is outside the calibrated tolerance. Supply or wake-up signal drift.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Supply voltage drifted
highOne of the most commonly reported causes for this code — check this first.
High-resistance contact
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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