Code result
P20CB
Exhaust Aftertreatment Fuel Injector A Control Circuit/Open
Moderate severity
What it means
Exhaust Aftertreatment Fuel Injector A Control Circuit/Open: the control circuit is open. 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
Injector winding open
highOne of the most commonly reported causes for this code — check this first.
Open wire to injector
mediumA plausible cause — test and verify before replacing parts.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Related help
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