Code result
P2A8B
Alternative Fuel Vaporizer A Performance
High severity
What it means
The AFCM detects that vaporizer A does not heat the alternative fuel from liquid to vapour within the calibrated time and temperature window. Liquid carry-over to the rail is possible.
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
Coolant flow through vaporizer reduced
highOne of the most commonly reported causes for this code — check this first.
Heat exchanger surface fouled
mediumA plausible cause — test and verify before replacing parts.
Related help
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