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Old 01-06-2014, 04:43 PM   #1
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Smile DTC Codes

Haven't been here in a while but in need of some information, so here goes.
My 08 has thrown a couple of codes ----

P 406 Exhaust gas recirculation sensor A high

P 1404 EGR temperature sensor circuit ??

Truck runs fine but have noticed a reduction in fuel mileage

Any thoughts or suggestions would be great..

Thanks

Pops

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Old 01-06-2014, 07:45 PM   #2
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Those codes usually set from an egr valve that is sticking open and the temp sensor is picking up that there is flow when there shouldn't be

Also while this is happening the PCM is constantly trying to correct a lean condition caused by the egr valve being stuck open hence waisting fuel
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Old 01-06-2014, 11:20 PM   #3
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Thanks for the answer---where is the EGR valve located
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'08 Regular cab Hemi Sport
3.92 Limited Slip,3rd Strike CAI
Diablo Predator
Gibson Dual Rear Exit Cat-back
Exhaust,E/fan,Amsoil 5w-20
\
16 Regular cab Hemi Sport
3.92 Limited Slip
Stock for now
Amsoil 5w-20
Diablo I-2
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Old 01-07-2014, 07:14 AM   #4
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On your motor valve should be on front of passenger side head with a steel tube running back to rear of intake manifold
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Old 01-10-2014, 10:37 AM   #5
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Changed it yesterday---thanks for your help---it took me about 1 hour, I could have done this in 20 mins, about 10 years ago. At least I could do it.
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'08 Regular cab Hemi Sport
3.92 Limited Slip,3rd Strike CAI
Diablo Predator
Gibson Dual Rear Exit Cat-back
Exhaust,E/fan,Amsoil 5w-20
\
16 Regular cab Hemi Sport
3.92 Limited Slip
Stock for now
Amsoil 5w-20
Diablo I-2
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Old 01-10-2014, 11:44 AM   #6
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Quote:
Originally Posted by Pops View Post
Changed it yesterday---thanks for your help---it took me about 1 hour, I could have done this in 20 mins, about 10 years ago. At least I could do it.
Yep, i feel your pain pops. Esp. when it gets cold.
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Old 01-13-2014, 09:39 AM   #7
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Question for you---did you rebuild the transmission yourself or have it done
I don't have any problems yet with the 08, but have had the transmission rebuilt in the 04 at 171k miles.
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'08 Regular cab Hemi Sport
3.92 Limited Slip,3rd Strike CAI
Diablo Predator
Gibson Dual Rear Exit Cat-back
Exhaust,E/fan,Amsoil 5w-20
\
16 Regular cab Hemi Sport
3.92 Limited Slip
Stock for now
Amsoil 5w-20
Diablo I-2
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