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M
p2004
Moderate
Mercedes-Benz · Sedans
Intake Manifold Runner Control Stuck Open Bank 1
Quick Answer
Error code P2004 on your Mercedes-Benz Sedans means: Intake Manifold Runner Control Stuck Open Bank 1. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
W177W206W214V297A220 2024A220 4MATIC 2024AMG A35 4MATIC 2024AMG C43 4MATIC 2024AMG C63 S 2024AMG E53 4MATIC+ 2024AMG E63 S 2024AMG EQS 53 2024AMG S63 E 2024C300 2024C300 4MATIC 2024E350 4MATIC 2024E450 4MATIC 2024EQS 450+ 2024EQS 580 4MATIC 2024Maybach S580 2024S500 4MATIC 2024S580 4MATIC 2024W223
Likely Causes
  1. Broken intake manifold runner flap linkage
  2. Failed intake manifold runner control actuator motor
  3. Carbon buildup preventing runner flaps from closing
  4. Worn or broken plastic flap pins in the intake manifold
How to Fix It
1
Remove the intake manifold cover and visually inspect the runner flaps
2
Check the runner control actuator for proper movement using a scan tool
3
Clean carbon deposits from the runner flaps and intake manifold ports
4
Inspect the flap linkage and pins for wear or breakage
5
Replace the intake manifold assembly if internal flaps are broken
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Intake manifold runner control actuator
Intake manifold assembly
Intake manifold gaskets
Throttle body cleaner
Related Error Codes
P0171P0174P0300P0410P0420
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