Code result
P20EB
Reductant Reservoir Heater "A" Control Circuit
Moderate severity
What it means
A general electrical fault on the reductant tank heater "A" control circuit. AdBlue freezes at -11 C, so the tank heater must work for cold-start dosing.
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
Heater element failed
highOne of the most commonly reported causes for this code — check this first.
Wiring open or connector loose
mediumA plausible cause — test and verify before replacing parts.
Related help
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