Code result
P00B9
Low Pressure Fuel System Pressure - Too Low. Low Ambient Temperature
High severity
What it means
Low-pressure fuel circuit pressure below target under cold ambient conditions. Often diesel waxing or gelled fuel filter.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Fuel waxing in cold weather
highOne of the most commonly reported causes for this code — check this first.
Related help
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