Code result
P20D2
Exhaust Aftertreatment Fuel Injector B Control Performance
Moderate severity
What it means
Exhaust Aftertreatment Fuel Injector B Control Performance: the component is electrically intact but its response does not match the command. This injector doses fuel into the exhaust to raise temperature for diesel particulate-filter regeneration; it does not fuel the engine.
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
Nozzle partially coked
highOne of the most commonly reported causes for this code — check this first.
Related help
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