The P1077 code in your 2022 Honda Odyssey indicates the Intake Manifold Runner Control (IMRC) is stuck in the open position. This Honda-specific code signals the variable intake system cannot properly adjust intake runner length for optimal airflow.
Understanding IMRC System
The Odyssey's IMRC system uses butterfly valves to change the effective length of the intake runners. At low RPM, the valves close for longer runners (more torque); at high RPM, they open for shorter runners (more power). P1077 indicates they're stuck open.
Common Causes of P1077
- IMRC actuator motor failure
- Broken or disconnected linkage
- Stuck butterfly valves
- Carbon buildup on valves
- Electrical circuit issues
- ECU control failure
Symptoms of IMRC Stuck Open
- Check engine light on
- Reduced low-RPM torque
- Poor acceleration from stop
- Slightly worse fuel economy
- Engine feels weak at low speed
- May hear abnormal intake noise
Odyssey Minivan Considerations
The Odyssey needs good low-RPM torque for passenger loads and accessories. IMRC stuck open affects this everyday driving characteristic.