Code result
U0601
Internal Control Module Software Incompatibility
Moderate severity
What it means
A control module has detected that its own internal software version is inconsistent — for example a partial flash that left the module with mismatched calibration and program code. The module may go offline or operate in a fallback mode.
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
Incomplete or interrupted module flash
highOne of the most commonly reported causes for this code — check this first.
Corrupted calibration block
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
Related help
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