P2004 on my Ford Focus

Tiny
TAYTHEKING
  • 2003 FORD FOCUS
  • 2.3L
  • AUTOMATIC
  • 260,000 MILES

Hey I just recently got this code like 2 mins after getting my catalytic converter fixed. Resettled the Cel light and it cam back on the next key cycle. I went back to the mechanics and the code they gave me was p2004. I want to fix this myself but I need someone to literally baby step me, even using pictures if they can. I know that the code has something to do with the imrc but with my lack of experience I can't find it. Can anyone help me locate the imrc, give me ideas on what may be wrong with it and give me some solutions. I feel one I located the imrc I can approached the solution better.

My car is a 2003 ford focus wagon 2.3l engine is that helps

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Sunday, January 26th, 2014 AT 1:31 PM

12 Replies

Tiny
MLDANIELS2000
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  • 233 POSTS

On intake manifold at back of engine.

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Sunday, January 26th, 2014 AT 1:50 PM
Tiny
TAYTHEKING
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Can you show me a picture or diagram, I'd not even know what the part even looks like on this car, I googled it but there are a million different parts, even when I input my car type in

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Sunday, January 26th, 2014 AT 2:12 PM
Tiny
TAYTHEKING
  • MEMBER

And that's the imrc? The one that's giving me the error code per say? Or at least the place I should start looking at right? (Sorry I'm a newbie)

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Sunday, January 26th, 2014 AT 3:28 PM
Tiny
MLDANIELS2000
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Yes, make sure the 2 lines are still connected to it.

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Sunday, January 26th, 2014 AT 3:30 PM
Tiny
TAYTHEKING
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I see two of those on the manifold, are they both the imrc, if so which one of them is bank one?

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Sunday, January 26th, 2014 AT 4:40 PM
Tiny
MLDANIELS2000
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Your vehicle only has one bank of cylinders. Just check wiring to imrc module, either one. Not sure why it would have two though. Should only have one.

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Sunday, January 26th, 2014 AT 7:17 PM
Tiny
TAYTHEKING
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Personally I believe the owner before me had her manifold replaced so it's different, but yeah as you can see there are two haha.

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Monday, January 27th, 2014 AT 6:03 AM
Tiny
TAYTHEKING
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Here is a better picture

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Monday, January 27th, 2014 AT 6:06 AM
Tiny
MLDANIELS2000
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That rustier one may be your problem. Try replacement.

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Monday, January 27th, 2014 AT 11:52 AM
Tiny
TAYTHEKING
  • MEMBER

Oh I believe that's just the outer part holding the actual imrc into place, it itself isn't rusty. Is there anyway I can test the both of them to see if they are working?

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Monday, January 27th, 2014 AT 12:09 PM
Tiny
MLDANIELS2000
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15) For KOEO & Continuous Memory Only DTCs P1516, P1517, P2014 & P2019, & For KOEO, KOER & Continuous Memory DTCs P1518-P1520, P1537, P1538, P2004-P2006 & P2008: Visual InspectionDTCs P1516 (IMRC or IMSC input error bank No. 1) and P1517 (IMRC or IMSC input error bank No. 2) indicate KOEO or Continuous Memory self-test failed when IMRC or IMSC monitor circuit signal fell below or exceeded expected calibrated range. Possible cause is binding, seizing, damage or obstruction of IMRC or IMSC mechanical system.
DTCs P1518, P1537 and P1538 may indicate IMRC or IMSC Bank No. 1 or Bank No. 2 stuck open. KOEO or Continuous Memory self-test failed when IMRC or IMSC monitor circuit signal falls below expected calibrated range at closed throttle. Possible causes are:

IMRC Or IMSC SIG Circuit Shorted To PWR GND Or SIG RTN
Faulty IMRC Or IMSC Actuator
Faulty Powertrain Control Module (PCM)
DTC P1519 indicates IMRC or IMSC may be stuck closed. KOEO or Continuous Memory self-test failed when IMRC or IMSC monitor circuit signal exceeded expected calibrated range with IMRC or IMSC activated. Possible causes are:

Faulty Vacuum Hoses
Faulty Vacuum Solenoid
Faulty Vacuum Actuator
IMRC Or IMSC Actuator Cable, Lever Or Gears Binding Or Seized
Cables Improperly Routed, Binding Or Seized
Faulty IMRC Or IMSC Actuator
Damaged Or Disconnected IMRC Or IMSC Housing Return Springs
Lever Return Stop Obstructed Or Bent
Lever Wide Open Stop Obstructed Or Bent
IMRC Or IMSC Monitor Circuit Open Or Shorted To VREF
IMRC Or IMSC SIG RTN Circuit Open Or Shorted To VPWR Or GND
IMRC Or IMSC VPWR Circuit Open
On models equipped with cable operated IMRC or IMSC, check IMRC or IMSC cables for correct routing and possible binding. Ensure cable core wire (if equipped) has slack at IMRC or IMSC housing and that lever contacts close plate stop screw. Ensure return springs operate properly and plates open and close fully. On models with vacuum operated systems, engine must run for 20 seconds, then perform KOEO self-test. On all models, operate IMRC or IMSC plates at intake manifold while checking for binding and sticking. If any faults are found, go to next step. If no faults are found, go to step 17).

WARNING: Be careful when operating IMRC or IMSC by hand. IMRC or IMSC return springs are strong and may cause plates to close suddenly.

Basically 3 problems possible;
Bad IMRC
Bad PCM (at least reflash needed)
Binding mechanisms such as throttle cable or throttle plate

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Monday, January 27th, 2014 AT 12:59 PM
Tiny
MLDANIELS2000
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Perform IMRC Or IMSC Physical TestOn Focus 2.0L 2V, Econoline and Pickup 4.2L, and Ranger 2.3L, remove electronic actuator assembly. On all others, disconnect IMRC or IMSC linkage or cable(s) from intake runner(s). Rotate IMRC or IMSC lever(s) from fully closed to fully open, and back to fully closed positions while checking for binding or sticking. Feel for return spring tension of approximately 3-4 INCH. Lbs. (0.34-0.45 N.M). Levers should fully open and close without obstruction. If any faults are found, clean or repair as necessary. If no faults are found, replace IMRC or IMSC actuator.

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Monday, January 27th, 2014 AT 1:02 PM

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