Code result
P239B
Diesel Intake Air Flow B Control Motor Current Range or Performance
Moderate severity
What it means
The motor current of the actuator on diesel intake air flow B is outside the calibrated window - typically excessive (sticky valve), or too low (worn brushes).
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
Motor overloaded by jammed valve
highOne of the most commonly reported causes for this code — check this first.
Related help
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