Exhaust Aftertreatment Fuel Injector A Circuit / Open
The 7th injector (HC dosing for DPF active regeneration) cannot be driven. Active regeneration cannot raise exhaust temperature, soot accumulates in the DPF.
Affected components
- Hc dosing injector
- Injector solenoid
- Wiring harness
Common causes
- High likelihood: Open coil in injector solenoid
- Medium likelihood: Broken control wire
Possible symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
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.