Hybspec

P2004M

Średni

Intake manifold swirl flaps — fault (Mercedes CDI)

OBD-II (EN): Intake Manifold Swirl Flap Malfunction

Code P2004M — Intake manifold swirl flaps — fault (Mercedes CDI). Symptoms: check engine light. Possible cause: broken swirl flaps (plastic — common problem in om642/om651). Professional diagnosis recommended.

Symptoms

Check engine light, power loss at low RPM, jerking

Possible causes

Broken swirl flaps (plastic — common problem in OM642/OM651), stuck stepper motor, carbon buildup

Affected systems

Silnik spalinowyUkład dolotowy

Related codes

Universal version

Code P2004M appears in these brands

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

Does code P2004M 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.