P2004
Intake Manifold Runner Control Stuck Open Bank 1
2001-2003 BMW 525iT E39 2.5L I6 🇬🇧
Moderate SeverityPowertrain
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
Common Questions
What does code P2004 mean on a 2001-2003 BMW 525iT E39?
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 BMW 525iT E39?
Common symptoms of P2004 include: Reduced low-RPM torque, Check engine light, Rough idle, Poor fuel economy.
What causes P2004 on a 2001-2003 BMW 525iT E39?
Common causes of P2004 include: Broken runner flap linkage, Failed actuator motor, Carbon buildup on flaps, Vacuum leak.