Possible causes

– Manifold flow valve harness is open or shorted
– Manifold flow valve circuit poor electrical connection
– Faulty Manifold flow valve
– Intake manifold
– Faulty Powertrain Control Module (PCM)

Tech notes

There is a factory service bulletin for the following Dodge models:

2007- 2008 (JS) Avenger
2007 (JS) Sebring
2008 (JS27) Sebring Convertible
2007 (MK49) Compass
2007 (MK74) Patriot
2007 (PM) Caliber

SUBJECT:
Flash: MIL Illumination with DTC P2004

OVERVIEW:
This bulletin involves selectively erasing and reprogramming the GPEC Powertrain Control Module (PCM) with new software and replacing the intake manifold as required.

NOTE: This bulletin applies to models equipped with a 1.8L, 2.0L or 2.4L gasoline engine (Sales Code EBA, ECN or ED3) as follows: Flash portion applies to PM/MK models built through April 21, 2007 (MDH 0421XX) and JS models built through May 15, 2007 (0515XX). The Intake Manifold Replacement portion applies to models built through March 22, 2007 (MDH0322XX).

SYMPTOM/CONDITION:
Some customers may experience MIL Illumination with no other symptoms. The condition may occur intermittently. Further investigation by the technician may find DTC P2004 – Intake Manifold Runner Control Stuck Open as the cause for MIL Illumination

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P2004 DODGE Description

The Powertrain Control Module (PCM) detects that the position feedback of the manifold flow valve position sensor is not within range of adapted value learned during inplant initialization or after volatile memory reset.