P1105moderate severityPowertrain
Fuel Completion Return to Open Loop
on 2017 Dodge Challenger 3.6L V6 Pentastar · RWD
What this code means
The PCM has detected that the fuel system failed to transition from open loop to closed loop operation within the expected time. This indicates the engine is running in open loop longer than normal, which reduces fuel efficiency and increases emissions.
Symptoms
- Check Engine Light
- Poor fuel economy
- Higher emissions output
- Rough idle when cold
Common causes
- Faulty oxygen sensor not reaching operating temperature
- Engine coolant temperature sensor malfunction
- Exhaust leak before oxygen sensor
- Fuel pressure out of specification
- Vacuum leak preventing closed loop entry
Diagnostic steps
- Monitor O2 sensor activity on scan tool to verify switching
- Check engine coolant temperature sensor reading vs actual temp
- Inspect exhaust for leaks near O2 sensor
- Verify fuel pressure is within specification
- Check for vacuum leaks
Repair notes
Diagnose and repair the condition preventing closed loop operation, typically an O2 sensor or coolant temp sensor issue.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1