P05ED
Reductant Heater Control Module Supply Voltage
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.
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.
Common causes
- high
Supply voltage low
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-550
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P05ED mean?
P05ED means "Reductant Heater Control Module Supply Voltage". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.
What are the most common causes of P05ED?
supply voltage low — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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