Code result
P25F6
AIR System B
Moderate severity
What it means
A general fault in the second secondary air injection (AIR) circuit. Detected by the O2 sensors which expect a lean swing during cold-start AIR pump operation but do not see one.
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
Failed AIR pump motor or impeller
highOne of the most commonly reported causes for this code — check this first.
Check valve seized by exhaust soot
mediumA plausible cause — test and verify before replacing parts.
Corroded or cracked air injection pipe
mediumA plausible cause — test and verify before replacing parts.
Related help
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