Hybspec

P2004

Średni

Intake manifold flaps — position stuck open (Mercedes)

OBD-II (EN): Intake Manifold Runner Position Stuck Open

Code P2004 — Intake manifold flaps — position stuck open (Mercedes). Symptoms: power loss at low rpm. Possible cause: faulty intake manifold flap motor (common problem om651 2.1 cdi). Professional diagnosis recommended.

Symptoms

Power loss at low RPM, unstable idle, jerking

Possible causes

Faulty intake manifold flap motor (common problem OM651 2.1 CDI), soot in the manifold (EGR), mechanical flap blockage

Affected systems

Silnik spalinowyUkład dolotowy

Related codes

Manufacturer variants

Manufacturer variants (extensions):

Code P2004 appears in these brands

Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.

Does code P2004 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.