Code result
P04FB
Crankcase Ventilation Hose Connection Sensor Range or Performance
Moderate severity
What it means
The sensor that monitors PCV hose connection reports a value within plausible range yet inconsistent with the engine model - signal does not switch when the hose is moved during diagnosis, or shows offset against actual hose state.
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
Sensor signal offset
highOne of the most commonly reported causes for this code — check this first.
Related help
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