P1537low severityPowertrain
Intake Manifold Runner Control Stuck Open (Bank 1)
on 2018 Ford Flex 3.5L V6 EcoBoost · AWD
What this code means
The IMRC for Bank 1 is stuck in the open position. This affects low-RPM torque and fuel economy as the manifold runners are optimized for high-RPM airflow.
Symptoms
- Check Engine Light
- Reduced low-RPM torque
- Poor fuel economy
- Slightly rough idle
Common causes
- Stuck IMRC actuator Bank 1
- Broken actuator rod or linkage
- Vacuum leak to actuator
- Failed IMRC solenoid
Diagnostic steps
- Inspect IMRC actuator Bank 1
- Check linkage and actuator rods
- Test vacuum supply
- Test IMRC solenoid operation
Repair notes
Replace IMRC actuator if stuck. Repair linkage. Fix vacuum supply.
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