Question about 2005 Dodge Ram 1500

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Code p0403 cleaned egr valve and checked o2 sensors. when you clear the code with the scanner, code comes back as soon as you start the truck. exaust gas recirculation control circuit. thinking egr valve isnt working at all?

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The code is EGR cicuit open. I would believe that to mean that if the cicuit is open that the EGR needs to be replaced.
The worst thing, I think, a tech can do is to start throwing parts at a problem, but sometimes that is the only answer if you want to get something repaired without spending hours tracking things down.
Please let me know how it goes.

Posted on Feb 07, 2010

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

Posted on Feb 07, 2010

  • terian_5 Feb 07, 2010

    your egr needs to be replaced and is very pricey i just changed mine

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Two codes came up on my scanner the egr valve and the O2 sensor i replace those two sensors and it stil does the same. rough idle, poor fuel economy and loss of power. They told me that it could be leaking...


pull you egr valve off and get some brake parts cleaner or carb or throttle body cleaner and clean your valvue also start the car with the valvue off and give it a little gas so you can blow all the stuff out of it then put it back on and erase the codes then drive and see if the check engine light comes back on

Mar 30, 2013 | Cars & Trucks

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Hyundai santa fe 2001


Car error codes::


Diagnostic Trouble Code Storage Condition Remedy
P0100 Mass Air Flow Sensor Voltage High C-8
P0100 Mass Air Flow Sensor Voltage Low C-8
P0110 Intake Air Temperature Voltage High C-10
P0110 Intake Air Temperature Voltage Low C-10
P0115 Coolant Temperature Voltage High C-9
P0115 Coolant Temperature Voltage Low C-9
P0120 Throttle Position Sensor (TPS) Voltage High C-7
P0120 Throttle Position Sensor (TPS) Voltage Low C-7
P0130 O2 Sensor 1 Circuit Voltage High C-30
P0130 O2 Sensor 1 Circuit Voltage Low C-30
P0130 O2 Sensor 1 Open Circuit C-30
P0150 O2 Sensor 2 Circuit Voltage High C-31
P0150 O2 Sensor 2 Circuit Voltage Low C-31
P0150 O2 Sensor 2 Open Circuit C-31
P0201 Injector Valve 1 Voltage High C-20
P0201 Injector Valve 1 Voltage Low C-20
P0201 Injector Valve 1 Open Circuit C-20
P0202 Injector Valve 2 Voltage High C-21
P0202 Injector Valve 2 Voltage Low C-21
P0202 Injector Valve 2 Open Circuit C-21
P0203 Injector Valve 3 Voltage High C-22
P0203 Injector Valve 3 Voltage Low C-22
P0203 Injector Valve 3 Open Circuit C-22
P0204 Injector Valve 4 Voltage High C-23
P0204 Injector Valve 4 Voltage Low C-23
P0204 Injector Valve 4 Open Circuit C-23
P0205 Injector Valve 5 Voltage High C-24
P0205 Injector Valve 5 Voltage Low C-24
P0205 Injector Valve 5 Open Circuit C-24
P0206 Injector Valve 6 Voltage High C-25
P0206 Injector Valve 6 Voltage Low C-25
P0206 Injector Valve 6 Open Circuit C-25
P0230 Fuel Pump Relay Voltage High C-6
P0230 Fuel Pump Relay Voltage Low C-6
P0230 Fuel Pump Relay Open Circuit C-6
P0325 Knock Signal Circuit 1 C-26
P0330 Knock Signal Circuit 2 C-26
P0335 No Engine RPM Signal C-32
P0335 Incorrect RPM Signal C-32
P0340 Hall Sensor Voltage High C-15
P0340 Hall Sensor Voltage Low C-15
P0403 EGR Valve Voltage High C-28
P0403 EGR Valve Voltage Low C-28
P0403 EGR Valve Open Circuit C-28
P0410 Secondary Air Pump Voltage High C-27
P0410 Secondary Air Pump Voltage Low C-27
P0443 Fuel Tank Ventilation Valve Voltage High C-29
P0443 Fuel Tank Ventilation Valve Voltage Low C-29
P0443 Fuel Tank Ventilation Open Circuit C-29
P0500 Vehicle Speed Signal C-42
P0505 Idle Air Control Voltage High C-33
P0505 Idle Air Control Voltage Low C-33
P0550 Power Steering Voltage High C-14
P0550 Power Steering Voltage Low C-14
P0560 Battery Voltage High C-4
P0560 Battery Voltage Low C-4
P0602 Control Module Programming Error C-2
P1110 Intake Manifold Valve 1 Voltage High C-34
P1110 Intake Manifold Valve 1 Voltage Low C-34
P1111 Intake Manifold Valve 2 Voltage High C-35
P1111 Intake Manifold Valve 2 Voltage Low C-35
P1230 Power Supply Relay Secondary Circuit C-3
P1405 EGR Valve Feedb. Voltage High C-28
P1405 EGR Valve Feedb. Voltage Low C-28
P1405 EGR Valve Feedb. Incorrect Signal C-28
P1501 Immobiliser No or Wrong Coding C-5
P1502 Immobiliser No Signal C-5
P1503 Immobiliser Wrong Signal C-5
P1530 A/C Relay Voltage High C-41
P1530 A/C Relay Voltage Low C-41
P1600 Reprogram or Replace Electronic Control Unit (ECU) C-2
P1602 Knock Control Module; Replace ECU C-2
P1690 Check Light Voltage High C-43
P1690 Check Light Voltage Low C-43
P1690 Check Light Open Circuit C-43
P1740 Torque Control Voltage Low C-40
P1740 Continuous Torque Control C-40

These are the error codes:

Jul 08, 2008 | 2001 Hyundai Santa Fe

1 Answer

1998 Ford Escort - P1405 Error code


Follow the link for help with this fault code P1405 Ford DPF EGR Sensor Circuit High Voltage Detected

I suggest you replace the EGR valve position sensor.

Mar 10, 2017 | 1998 Ford Escort

1 Answer

Ford Escort P1405 Error Code


Are you sure you have EGR flow?? Hold the EGR valve open the engine should run poorly, if not you have no flow.

May 31, 2012 | 1998 Ford Escort

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

Engine light is on code reads p0403 egr valve cleaned light is now it back on any ideas please..


do you have stalling or misfire or rough idling problem? if yes probably egr valve stuck open. or just socket for egr valve is problematic. check for broken wires too.

Nov 16, 2011 | 1995 Geo Prizm

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

1 Answer

1999 Mercury tracer EGR Code making Service Engine Soon light come on How do I wipe the codes out? Failed test. Already replaced EGR Valve.


go to auto zone and ask for a there portable engine dianostic scanner. hook it up under the steering wheel inside the car follow the instuctions and write the code down and clear the code while the scanner is hooked up. if you have an employee do it they will not clear the code. when you go back inside they will run the code and it will give you a pretty close idea of what else could be wrong. egr was replaced but it could be an O2 sensor or your exhaust manifold.

Jul 15, 2009 | 1998 Mercury Tracer

1 Answer

Egr problem


Hi, Eric

Lets tackle the EGR code first. Your vehicle is equipped with an electronic EGR valve, and the code is referring to an error with the pintle position. Your first port of call is to go back to whoever read the codes out and have them reset using this procedure:-

Switch off the ignition
Disconnect the wiring plug from the EGR valve
Connect the scanner
Switch on the ignition
Clear the code using the scanner.

Now this bit is VERY important:- As soon as the scanner tells you the codes are cleared, and I mean that very SECOND, switch off the ignition IMMEDIATELY, or the code will reappear.

You can then disconnect the scanner, reconnect the EGR valve, and then turn on the ignition.

If the code comes back then remove the valve and clean it, and whilst the valve is off, you may as well take the opportunity to clean out the ports where the valve was sat.

If that fails then its a new EGR valve I'm afraid!

Now for the other code, and I'm afraid that unless you have a proper scanner which gives live data then all you can really do is check the wiring for the crank sensor and then if that checks out ok then fit another sensor and see if that clears the code.

Very best regards

Geordie

Jun 19, 2008 | 2006 Ford F 350 Super Duty

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