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2005 Dodge Caravan P0403 Code

How do I go about checking the EGR valve and circuit? At $100, I don't just want to replace the valve if it isn't bad.

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Use a mityvac or equivalent handheld vacuum device and while running engine apply vacuum to EGR valve (disconnect line to EGR and plug first)..stumble idicates it is opening and operating one way correctly....computer controls the operation (when and duration)..so left to check is seating (spray carb cleaner around the EGR)......and computer instructing EGR at erroneous times to open (many possible reasons)..good luck and inform me/us of outcome :)

Posted on Dec 02, 2008

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Posted on Jan 02, 2017

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Code p0403 on a 2001 chrysler intrepid


Hi there:
P0403 - Exhaust Gas Recirculation Circuit Malfunction



The most common failure is the EGR solenoid goes bad. The code will not set and turn on the light until the car's computer has gotten around to completing the EGR self-test.

The P0403 indicates the computer is not seeing any voltage on the blue wire coming back from the egr solenoid.


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.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 28, 2012 | 2001 Dodge Intrepid

1 Answer

Get code P0403 on 2001 Dodge Caravan...even after I just replaced the EGR valve twice (first replaced as thought might be faulty).....it cleared a few other codes related to EGR flow, but the P0403 ke


if you have a obd11 scanner, clear the codes and drive the vehicule for a while ,a good half an hour or so above 30 mph. this will give your onboard computer a chance to relearn system settings.if the code comes back there could be some other sensor malfunctioning or a problem with the onboard computer.ex corroded connections or broken pins.

Nov 26, 2011 | 2001 Dodge Caravan

1 Answer

What does the code p0403 and p1784 mean and what do i need to do to fix it


P0403 - Exhaust Gas Recirculation Circuit Malfunction

Causes for DTC P0403:
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control solenoid valve
- EGR temperature sensor and circuit

Solutions for DTC P0403:
- Repair EGR harness or connector
- Replace EGR volume control solenoid valve
- Replace EGR volume control valve


P1784 - Transmission Mechanical Failure (First and Reverse)

Causes for DTC P1784:
- Not waiting to allow transmission to engage gear before accelerating.
- Dirty fluid / clogged transmission filter

Solutions for DTC P1784:
- Allow gears to engage before acceleration
- Preform transmission service (flush & filter)

Mar 09, 2011 | Chrysler Town and Country Cars & Trucks

3 Answers

P0403 engine code is on


here is a good explanation:

http://www.obd-codes.com/p0403

Dec 24, 2010 | 2006 Dodge Grand Caravan

1 Answer

2005 Dodge caravan 3.2 code 406? is this an


This code is for the EGR valve, "P0406 Exhaust Gas Recirculation Sensor A Circuit High", this doesn't necesarily mean you need to change your EGR valve but it's probable. Check with your dealer this just might still be covered.

Jun 06, 2010 | 2007 Dodge Ram Truck

1 Answer

2005 dodge caravan diagnostic code p0404, please explain and do i replace the egr valve?


p0404 is-egr flow ckt range/performance, check egr, remove from vehicle and clean out carbon from valve and where it mounts on engine. also check the wireing connector and wire to valve. if this dosnt work, replace valve,

Apr 23, 2010 | 2005 Dodge Caravan

2 Answers

Code p0403


If it is a code 0403 that is your egr solenoid malfunctioning.

Feb 07, 2010 | 2005 Dodge Ram 1500

1 Answer

2005 dodge grand caravan getting code p0406


3.3 engines has the egr valve with transducer.you have to replace the whole unit. code p0406 what its trying to tell you your egr valve circuit is short to ground.it has failed .

Jul 04, 2009 | 2005 Dodge Grand Caravan

2 Answers

2001 dodge stratus r/t code p0403


Here are possible causes for this code.

  • EGR solenoid connector is damaged (check pins for damage, and moisture)
  • EGR solenoid control circuit is open or shorted to ground
  • EGR solenoid control circuit is shorted to voltage
  • EGR solenoid has failed
  • PCM has failed
Please let me know if this information is helpful. Positive feedback is appreciated. Thank You!

Mar 26, 2009 | 2001 Dodge Stratus

2 Answers

2001 grand caravan


the a/c condenser fan fuse could be blown. replace fuse and disconnect battery. there is also a TSB relating to this. call dealer to confirm

Mar 12, 2009 | 2001 Dodge Grand Caravan

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