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- Intake Manifold Runner Control (IMRC) monitor signal shorted to power
- Faulty Intake Manifold Runner Control (IMRC) actuator
- Faulty Intake Manifold Runner Control (IMRC) solenoid
- Damage Powertrain Control Module (PCM)
- Blocked vacuum hoses alt="What does this mean?"> What does this mean?
- Engine Light ON (or Service Engine Soon Warning Light)
P2004 Ford Description
The P2004 is set when the Intake Manifold Runner Control (IMRC) is commanded closed by the Powertrain Control Module (PCM), but the IMRC indicates open.
code p 2004 has two references
intake manifold air control actuator , bank 1 --actuator stuck open====causes ---wiring---intake manifold air control actuator ---mechanical fault
second reference is
intake manifold air control solenoid , bank 1 --solenoid stuck open===causes ---wiring--intake manifold air control solenoid ---mechanical fault
probably means the same as what you have but in a more easy to understand method
Your engine has IMRC (intake manifold runner controls) that are supposed to stay closed under 3000 rpms. Over time they get carboned up and can hang open causing poor performance. Try to manually close the valve, if it immediately opens again the diaphragm might be bad. It would require replacing that IMRC.
Diagnostic Test Code (DTC) P1250 is a manufacturer - specific code which has a general description of "Pressure Regulator Control (PRC) Solenoid Circuit Malfunction".
The PCM monitors input voltage at Pin number 44 when the ignition is turned on. DTC P1250 sets when less than .44 volts are present. The possible causes are: > PRC Valve malfunction (open or shorted internally) > Open or short circuit between the PRC valve and the PCM (control circuit) > Open or short circuit in the solenoid ignition voltage supply circuit > Failed PRC valve (stuck open) > Malfunctioning PCM
P2004 - Intake manifold runner control (IMRC) stuck open (bank 1) Description - This DTC is set when the IMRC is commanded closed, but the IMRC monitor indicated open. This DTC replaces P1518 and P1537.
Probable causes - IMRC monitor signal circuit shorted to PWR GND or SIG RTN - Damaged IMRC actuator or solenoid - Blocked vacuum hoses
Diagnostic aids - Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed.
This control valve generally is located on the back of the intake.
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DTC P1512 - VARIABLE TUMBLE CONTROL SYSTEM (VTCS), STUCK CLOSED The air intake hose that goes from the air filter/mass airflow sensor to the throttle body they are common to crack. This air leak can cause a lean condition if that checks out ok then the issue is usually a faulty mass air flow sensor .This would need to be checked next.
Usually the actuator valve is stuck closed. These are the most common causes of the P1512 and possible causes are: * ECT sensor malfunction. *
MAF sensor malfunction. * IAT sensor malfunction. * EGR boost sensor
malfunction * TP sensor malfunction. * CKP sensor malfunction * VTCS
solenoid valve malfunction. * VTCS shutter valve stuck closed. * VTCS
shutter valve actuator stuck closed. * Short circuit between PCM and
VCTS solenoid valve. * PCM malfunction.
I would start with the mass air
flow sensor this can cause all these issues. Then the cat. This would be
the next step.
I hope this helped (remember to rate and comment this answer).