Question about Mitsubishi Montero Sport
The P0403 code represents a problem with the Exhaust Gas Recirculation Solenoid or circuit.Below is the chart that explains and directs us to where the problem may exist.
Since there are a number of components or wires that can be at fault for this code,I feel it is not going to be something that we should attempt to diagnose via long distance. You may wish to check the basic wiring and vacuum supply to the solenoid, but if you find that the ECM is at fault, you will want to have this type of problem backed up by a good part and labor warranty.
Most solenoids need about 20 ohms or slightly higher resistance on the primary winding circuits to function correctly.
Below is a technical service bulletin I have located on your vehicle, It may or may not be related to your current problem. I simply wanted you to have it.
TSB Revision: TSB-06-13-012
DATE: September, 2006
MODEL: See below
EGR SYSTEM TROUBLESHOOTING
- SERVICE MANUAL REVISION
This bulletin contains additional troubleshooting procedures for the vacuum controlled EGR system on the affected vehicles.
Write the TSB revision number of this bulletin in the "TSB Revision" box at the bottom of the affected service manual pages.
1995-1996 Mirage 1.5L and 1.8L (California emissions only)
1996 Mirage 1.5L and 1.8L (Federal emissions only)
1997-2002 Mirage 1.5L and 1.8L
2003-2006 Lancer 2.0L
2003-2006 Lancer Evolution
1996 Galant 2.4L
1997-1998 Galant 2.4L (Federal emissions only)
1999-2003 Galant 2.4L and 3.0L
1995-1999 Eclipse/Eclipse Spyder 420A and 2.0L Turbo
1996-1999 Eclipse/Eclipse Spyder 2.4L
2000-2005 Eclipse/Eclipse Spyder 2.4L and 3.0L
1996-1999 3000GT 3.0L
1996 Diamante 3.0L
1997-2004 Diamante 3.5L
1996 Montero 3.0L 12 valve
1996 Montero 3.0L 24 valve (Federal emissions only)
1996 Montero 3.5L
1997-2000 Montero 3.5L (Federal emissions only)
2001-2002 Montero 3.5L
1997-1999 Montero Sport 2.4L (Federal emissions only)
1997-1998 Montero Sport 3.0L (Federal emissions only)
1999-2003 Montero Sport 3.0L
1999-2004 Montero Sport 3.5L
1996 Truck 2.4L
1995 Expo/Expo LRV 1.8L and 2.4L (California emissions only)
1996 Expo/Expo LRV 1.8L and 2.4L2001 montero sport looking for - fa83f2a.gifmissions only)
Let me know,if needed further assistance.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
Posted on Sep 11, 2010
I hope this helps.
Posted on Sep 10, 2010
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Posted on Jan 02, 2017
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Jun 14, 2016 | Cars & Trucks
Trouble Code: P0403
EGR Control Circuit Malfunction
EGR solenoid control circuit is open or shorted to ground . EGR solenoid power circuit is open (check power from relay) . EGR solenoid is damaged or has failed . PCM has failed .
Sep 11, 2012 | Cars & Trucks
With the ignition on and engine off, use a scan tool to activate the EGR solenoid. Listen or feel for a clicking, indicating that the solenoid is operating.
If the solenoid does operate, you'll have to check current draw on the ground circuit. It should be less than one amp. If it is then the problem is intermittent. If it isn't then there is excessive resistance in the circuit and perform the following
1. When it's activated see if you can blow lightly through it. IF you can\'t there may be a blockage causing excessive resistance. Replace EGR solenoid as needed. If there is no blockage, disconnect the EGR solenoid and the PCM connector containing the EGR solenoid control circuit. Using a digital Volt-Ohm meter (DVOM) check resistence between the control circuit and battery ground. It should be infinite. If it isn't, then there is a short to ground on the control circuit. Repair the short to ground and retest as needed.
2. If the solenoid doesn't click as it should, disconnect the EGR solenoid connector and connect a test light between the two wires. Using the scan tool, command the EGR solenoid on. The light should light up. If it does, replace the EGR solenoid. If it does not perform the following: a. Check for 12 Volts on the ignition supply voltage to the solenoid. If it isn't present, inspect the supply circuit for an open, or a short due to chafing or breakage and re-test. b. If it still doesn't operate: then manually ground the EGR solenoid control circuit. The light should light. If it does, repair open in EGR solenoid control circuit and re-test. If it doesn't, replace EGR solenoid.
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