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Car OBD Codes

Car obd codes, car OBD-ii codes, car Fault codes , Car Trouble codes, Car Error
codes, diagnostic codes






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JEEP P0403 EXHAUST GAS RECIRCULATION CONTROL CIRCUIT


DESCRIPTION


OBD-II TROUBLE CODE DESCRIPTION FOR P0403 JEEP




EXHAUST GAS RECIRCULATION CONTROL CIRCUIT




WHAT DOES THIS MEAN?

OBD2 Code P0403 Jeep definition:
The Exhaust Gas Recirculation (EGR) system is controlled by a vacuum solenoid.
The solenoid is supplied ignition voltage. The Powertrain Control Module (PCM)
controls the vacuum solenoid by grounding the control circuit(ground) or driver.
The primary function of the driver is to supply ground for the object that is
being controlled. Each driver has a fault circuit that the PCM monitors. When
the PCM turns a component on, the control circuit voltage is low, or close to
zero. When the component is turned off, the voltage on the control circuit is
high, or near battery voltage. The PCM watches for these conditions, and if it
doesn’t see the proper voltage at the proper time, this code is set.


SYMPTOMS

Possible sumptoms of OBD code P0403 Jeep
Usually a fault in the control circuit, will leave no noticeable symptoms other
than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR
control solenoid is stuck open due to debris, etc. the code may be accompanied
by misfire under acceleration, rough idle, or engine dying altogether.


CAUSES

Possible causes of OBD code P0403 Jeep
The causes for a P0403 Jeep EGR code could be any of the following: Bad EGR
solenoid Excessive resistance in control circuit (PCM controlled ground) due to
an open, chafing or damage to the harness Poor connection at the EGR solenoid
harness (worn or loose pins) Water intrusion at the EGR solenoid harness
Blockage in EGR control solenoid holding solenoid open or closed causing
excessive resistance Loss of supply voltage to EGR solenoid Bad PCM


POSSIBLE SOLUTIONS

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.


RELATED CODES

P0400 Jeep P0401 Jeep P0402 Jeep

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THE OBD2 CODE INFORMATION BE APPLICABLE FOR JEEP:

,2013 Jeep Wrangler Unlimited Moab,2013 Jeep Wrangler Rubicon 10th
Anniversary,2013 Jeep Grand Cherokee Trailhawk,2012 Jeep Wrangler Unlimited
Altitude,2012 Jeep Wrangler Freedom Edition,2012 Jeep Wrangler Dragon
Concept,2012 Jeep Wrangler Call of Duty MW3,2012 Jeep Wrangler Arctic,2012 Jeep
Wrangler,2012 Jeep Liberty Arctic,2012 Jeep Grand Cherokee SRT8,2012 Jeep Grand
Cherokee Concept,2011 Jeep Wrangler Mojave,2011 Jeep Wrangler Call of Duty Black
Ops,2011 Jeep Wrangler,2011 Jeep Patriot,2011 Jeep Grand Cherokee UK
Version,2011 Jeep Grand Cherokee,2011 Jeep Compass,2009 Jeep Wrangler Unlimited
EV,2009 Jeep Patriot EV,2008 Jeep Wrangler Unlimited UK Version,2008 Jeep
Wrangler UK Version,2008 Jeep Renegade Concept,2008 Jeep Patriot Back Country
Concept,2008 Jeep Liberty,2008 Jeep Grand Cherokee S-Limited UK Version,2008
Jeep Grand Cherokee Overland UK Version,2008 Jeep Grand Cherokee,2008 Jeep EV
Concept,2008 Jeep Cherokee,2007 Jeep Wrangler Unlimited,2007 Jeep Wrangler
Rubicon,2007 Jeep Trailhawk Concept,2007 Jeep Patriot UK Version,2007 Jeep
Patriot,2007 Jeep Grand Cherokee UK Version,2007 Jeep Grand Cherokee SRT-8 UK
Version,2007 Jeep Compass UK Version,2007 Jeep Compass,2007 Jeep Commander UK
Version,2006 Jeep Grand Cherokee SRT8,2006 Jeep Commander 4×4 Limited 5.7
HEMI,2005 Jeep Wrangler UK Version,2005 Jeep Patriot Concept,2005 Jeep Liberty
Renegade 3.7,2005 Jeep Liberty CRD Limited,2005 Jeep Hurricane Concept,2005 Jeep
Grand Cherokee 5.7 Limited,2005 Jeep Gladiator Concept,2005 Jeep Compass
Concept,2005 Jeep Cherokee UK Version,2004 Jeep Wrangler Unlimited,2004 Jeep
Rescue Concept,2003 Jeep Treo Concept,2003 Jeep Grand Cherokee UK Version,2003
Jeep Cherokee UK Version,2003 Jeep Cherokee Renegade,2002 Jeep Willys2 Concept

 

NOTE:

1. The list of automotive Makes at the right edge of the screen. The currently
selected ODB-ii codes is for the Jeep makes.

2. Look up the other OBD II Trouble Codes, please use the search box. Enter the
5 character trouble codes in the search box and submit the search.



3. Don’t assume a particular OBD-II code means the same for other auto
manufacturers as there are many makes specific codes in use.

4. If your OBD-II trouble codes are for a different car, select that vehicle
series before searching for the diagnostic codes because not all OBD2 codes used
by one manufacture are used by the other makes.

5. The information contained on this site is presented for informational
purposes only. We are not responsible for any actions you take on your vehicle.
If you have any doubt as to repairs on your vehicle, please contact your
technician.

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