Exhaust Aftertreatment Fuel Pressure Sensor Circuit
A general electrical fault is reported on the aftertreatment fuel-pressure sensor — used to verify the dedicated HC-dosing rail is primed.
Affected components
- Aftertreatment fuel pressure sensor
Common causes
- High likelihood: Sensor failed
- Medium likelihood: Harness fault
Possible symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.