Check engine light

2004 DODGE RAM
126,388 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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JOANIE0716
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The check engine light keeps coming on. My son changed all four sensors and the EGR valve and a code comes up P0405. He also cleaned the carbon out we change the air filter and still comes on. I sometimes drive it for a day with out it coming on. And pop here it comes. Need to get my truck inspected please help.
Feb 11, 2018 at 9:33 AM
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JACOBANDNICKOLAS
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The code indicates an EGR issue. Here is a video on how to check it:

https://www.youtube.com/watch?v=DqUCbbKdWf4


I have also attached a picture of one to help you locate it. Note: The code is generic. However, I would recommend confirming it works properly. Also, make sure the wiring to the EGR is in good condition, not damaged, corroded. A poor connection can cause a false reading to the ECM.

One last thought, remove the EGR and make sure there is not a carbon build up.
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Feb 11, 2018 at 8:21 PM
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JOANIE0716
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Hi guys, well my son checked everything. Repaired what needed to be repaired. Last night he took it for a ride and check engine light stay off. I get in it this morning to go to work and it is back on. Please help. Do not know what else to do.
Feb 13, 2018 at 10:19 AM
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STRAILER
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Did you replace the EGR valve?
Feb 13, 2018 at 10:21 AM
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JOANIE0716
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How many miles do I have to drive after the check engine light is off? Before I get it inspected?
Feb 13, 2018 at 10:11 PM
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STRAILER
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Once the codes are cleared you will need to drive it long enough for the monitors to reset which is about 50 miles.
Feb 14, 2018 at 10:15 AM