Code result
P04A1
Exhaust Pressure Control Valve B Low
Moderate severity
What it means
Same as P049F with the control line shorted to ground.
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
Control line shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Related help
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