Intake Manifold Runner Control Stuck Open Bank 1
2008-2008 Chevrolet Impala 3.5L V6
The 2008 Chevrolet Impala is equipped with a 3.5L V6 engine. Below you'll find detailed p2004 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The variable intake manifold runner flaps on bank 1 are stuck in the open position.
Symptoms
- Reduced low-RPM torque
- Check engine light
- Rough idle
- Poor fuel economy
Common Causes
- Broken runner flap linkage
- Failed actuator motor
- Carbon buildup on flaps
- Vacuum leak
Diagnostic Steps
- Inspect intake manifold runner mechanism
- Test actuator motor
- Check vacuum lines if applicable
Repair Notes
Clean carbon deposits from runner flaps. Replace actuator motor or linkage as needed.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2004 on Other Vehicles
Chevrolet Astro
1996-1996 4.3L V6 Vortec
Chevrolet Astro
1997-1997 4.3L V6 Vortec
Chevrolet Astro
1998-1998 4.3L V6 Vortec
Chevrolet Astro
1999-1999 4.3L V6 Vortec
Chevrolet Astro
2000-2000 4.3L V6 Vortec
Chevrolet Astro
2001-2001 4.3L V6 Vortec
Chevrolet Astro
2002-2002 4.3L V6 Vortec
Chevrolet Astro
2003-2003 4.3L V6 Vortec
Common Questions
What does code P2004 mean on a 2008-2008 Chevrolet Impala?
P2004 stands for "Intake Manifold Runner Control Stuck Open Bank 1". The variable intake manifold runner flaps on bank 1 are stuck in the open position.
What are the symptoms of P2004 on a Chevrolet Impala?
Common symptoms of P2004 include: Reduced low-RPM torque, Check engine light, Rough idle, Poor fuel economy.
What causes P2004 on a 2008-2008 Chevrolet Impala?
Common causes of P2004 include: Broken runner flap linkage, Failed actuator motor, Carbon buildup on flaps, Vacuum leak.
Last updated: March 2026
View Labor Times | View Torque Specs | View Fluid Specs | View Battery Specs