Engine Error
P2004
Intake Manifold Runner Control Stuck Open (Bank 1)
Severity
Medium
Symptoms
Rough idle, poor low-end torque, check engine light
Common Causes
- Carbon buildup blocking runner flaps
- Broken vacuum line to IMRC actuator
- Failed IMRC solenoid/actuator
- Broken runner flap linkage
How to Fix
- 1 Clean intake manifold carbon
- 2 Replace damaged vacuum hoses
- 3 Replace IMRC actuator
- 4 Replace intake manifold assembly
Estimated Repair Cost
USD
$50
–
$1200
Vacuum hose: $50; Actuator: $150 - $350; Manifold replacement: $600 - $1,200