Code result
P28C3
EVAP System High Load Purge Line B Performance
Moderate severity
What it means
The ECM detects insufficient flow or pressure in the high-load purge line B of the evaporative emissions system. Purge cannot be commanded effectively under high engine load.
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
Purge line B restricted or kinked
highOne of the most commonly reported causes for this code — check this first.
Purge valve B partially open
mediumA plausible cause — test and verify before replacing parts.
Related help
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