Code result
P05ED
Reductant Heater Control Module Supply Voltage
Moderate severity
What it means
The reductant (AdBlue) heater control module - which warms tank, lines and injector to keep AdBlue from freezing - reports its supply voltage outside the calibrated window.
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
Supply voltage low
highOne of the most commonly reported causes for this code — check this first.
Related help
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