Code result
P23CD
Fuel Heater Control Module Feedback Signal Open
Moderate severity
What it means
The feedback line from the fuel heater control module to the ECM - reporting heater status - is open.
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
Open in feedback wiring
highOne of the most commonly reported causes for this code — check this first.
Related help
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