Code result
P2AB2
Catalyst Heater Control Module Supply Voltage
Moderate severity
What it means
The catalyst heater control module reports supply voltage outside the expected window. Heating output cannot be regulated as expected.
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
Module supply fuse blown
highOne of the most commonly reported causes for this code — check this first.
Alternator regulator drift
mediumA plausible cause — test and verify before replacing parts.
Related help
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