Code result
P0884
TCM Power Input Signal Intermittent
Moderate severity
What it means
The TCM detects intermittent loss of main supply voltage above a threshold count. Often caused by loose connector or relay fault.
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
TCM power relay intermittent
highOne of the most commonly reported causes for this code — check this first.
Power connector loose
mediumA plausible cause — test and verify before replacing parts.
Connector with intermittent contact under vibration
lowLess common, but worth ruling out after the more likely causes.
Related help
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