What causes P1077 on a Honda?

Carbon-locked intake control valve Failed control solenoid holding the high-RPM position Broken vacuum diaphragm Split vacuum hose to the actuator Failed position sensor

How do I fix P1077 on a Honda?

Command the valve and watch position feedback Check vacuum supply at the actuator Decarbonize the valve and runners Inspect hoses for splits Replace the solenoid or valve per response tests

P1077 Intake Manifold Runner Control (IMRC) system malfunction at low rpm

Q: What does P1077 mean on a Honda?

P1077. Intake Manifold Runner Control (IMRC) system malfunction at low rpm. Applies to Accord, Prelude, Odyssey with dual-stage intake manifolds.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Accord, Prelude, Odyssey with dual-stage intake manifolds

What does P1077 mean on a Honda?

P1077. Intake Manifold Runner Control (IMRC) system malfunction at low rpm. This Honda-enhanced code applies to Accord, Prelude, Odyssey with dual-stage intake manifolds.

Common causes of P1077

Carbon-locked intake control valve
Failed control solenoid holding the high-RPM position
Broken vacuum diaphragm
Split vacuum hose to the actuator
Failed position sensor

How to fix P1077

Command the valve and watch position feedback
Check vacuum supply at the actuator
Decarbonize the valve and runners
Inspect hoses for splits
Replace the solenoid or valve per response tests

Sources and review

Last updated 2026-09-24.