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Check engine light

Have 2006 Dodge Diesel and check engine light keeps coming on. How do you find the code using the ignition key?

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U can try turning the key on and off three times if that doesnt work u need a obd2 scan tool.

Posted on Feb 11, 2009


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2006 VW Jetta code U0100

This problem is with ecu / ecm= engine control computer. These are a common and horrible problem on vw's, particularly on tdi's. The signs in a tdi are when car dash lights come on, but no glow plug light,trans gear lights flash, but car still tries to crank. And hopefully ecu has enough power to out out code u0100= no communication with ecu. Unfortunately the ecu will need to be replacd. The ecu is located under the hood, near and under the wipers. Used ecu with same codes run $50-200. New $1000. If get used one make sure has a return policy. codes must match production quarterly year.

Apr 14, 2013 | 2006 Volkswagen Jetta

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Engine control unit malfunciton say's on

1. Put the key in the ignition.

2. Turn key all the way forward - not to the point where the car starts, just to the point where all the lights come on. Do it in this sequence: ON-OFF-ON-OFF-ON..

3. Keep a close eye on your odometer. You will see a series of codes display, followed by the word "donE"...

4. These codes will tell you why the "Check Engine Light" is coming on.

5. If you see "P0442" followed by "P0456". These codes mean respectively: EVAP sensor detection... SMALL LEAK. IF IT IS THESE SET OF CODES, fear not - nothing is wrong with your car. Simply tighten your gas cap, then...

6. Pop the hood, disconnect the NEGATIVE battery terminal - DO NOT DISCONNECT THE POSITIVE TERMINAL - FOR THE LOVE OF GOD. You will run the risk of shorting out the electrical system.

7. Wait a couple of minutes, then reconnect.

8. Start the car up and TADA! CEL is gone!

Hope this helps...

Jul 14, 2008 | Dodge Sprinter Cars & Trucks

1 Answer

Check gauge/low voltage

May or may not throw a code, have you had the alternator checked, this sounds like a bad alternator and also you charged the batteries but have them tested also, this sounds like an alternator problem.

Jan 16, 2013 | 2006 Dodge Ram 3500 Truck

1 Answer

How to clear engine codes 1999 dodge ram 2500

This is the most up-to-date check engine code reference chart for all of Dodge including

2000 and newer Durango have a built-in system that can display check engine light (CEL) codes without the use of a scanner. 1999 and earlier Durangos must be read with a OBD-ll scanner. Your local auto parts store can get the codes for you either way and will usually do this for free.
hope this help let me know : - )

2000 and newer directions:
Turn the key to ON (not start), OFF, ON, OFF, ON and leave it there. If you look in the odometer window the codes will flash any code(s) with a small delay between each result. Each code should be in a P#### format, and will say PDONE when completed - turn your key to OFF and remove. Use the OBD code list to determine what problem the computer detected.

To reset your engine codes:
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.
Start but do not hit the throttle. Idle for about 10/15 seconds then turn off.
Restart the truck and drive as usual. It will take at least 12 starts and 48 miles to fully retune the computer. Hard Codes leave a shaddow for 40 full cold starts.

Dec 31, 2011 | 1999 Dodge Ram 2500 4WD

1 Answer

Was driving my 97 dodge caravan, and it just quit on me, whats the problem?

If the check engine light is on do the following.

insert ignition key into the ignition.

turn the key as follows.

off-on, off-on, off-on. ( on is when the dash lights come on, off is one click back from on)

service codes will flash out in pairs of numbers on the check engine light. 5-5 is the end of the test.( the codes may display on the odometer if its digital) write down the codes and google the findings.

you may have just run out of gas ;-)

Jun 06, 2011 | 1997 Dodge Caravan

1 Answer


Weird, if it continually stalls the OBD2 system should set a code.
Fisrt check to see if the check engine light is functioning. With the vehicle off place the key in the ignition and turn to the RUN position but do not start. Does the check engine light come on? If not, the bulb is out and there is a most likely a code tripped. The check engine light is just not working.

I'm betting there is a code or shortly will be a code and suggest you scan it before trying to daignose the issue too much further. It could be any number of problems. It could be anything from a fuel related issue, to ignition, to a sensor, to the computer itself, and cracked part, leaking gasket, faulty injector, and so on.

Oct 06, 2010 | Dodge Durango Cars & Trucks

1 Answer

2004 Dodge Ram Diesel. Check engine light comes

You will need to have a diagnostic test on this vehicle which will then provide you some error codes.Then once you get the error code you can start looking where the fault is.Hope this helps.

Dec 08, 2009 | 2004 Dodge Ram 2500

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Check engine light stays on dodge 2006 2500 Diesel 4X4 Problem

have computer scaned to find out why. they will pull codes and go from there.

Oct 10, 2009 | 2006 Dodge Ram 2500

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