Code result
P2C31
Ignition Coil Primary Circuit Fuse B
High severity
What it means
The ECM detects an open or blown fuse on the ignition coil primary supply circuit B. Affected coils receive no operating voltage.
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
Primary supply fuse blown by short circuit
highOne of the most commonly reported causes for this code — check this first.
Shorted ignition coil drawing excess current
mediumA plausible cause — test and verify before replacing parts.
Related help
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