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  #37  
Old 08-14-2014, 08:00 AM
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Re: New Check Engine Light

I'm using BAFX OBDII Scan tool with the Torque Pro App on a Samsung Galaxy Tab S3 tablet.
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  #38  
Old 08-26-2014, 10:55 AM
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Re: New Check Engine Light

That's how mine started [P20EE] somewhere around 10 trips to the dealer ago. It is now back in the second time for the Service DEF message.
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  #39  
Old 08-26-2014, 03:08 PM
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Re: New Check Engine Light

Mine started with P20EE and progressed to the "won't restart in xx miles" message.

I am at the dealer now and we have the issue diagnosed. The DEF injector clogged with chrystals and the DEF pump failed. Which happened first, I don't know. I suspect the DEF pump died and the low flow of DEF allowed the injector to plug up. DEF chrystalizes when it contacts air and dissolves when it contacts DEF or water.
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  #40  
Old 10-03-2014, 09:45 AM
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Re: New Check Engine Light

Well code p20ee

Waiting on my new catalytic

Of course on backorder


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  #41  
Old 10-03-2014, 10:21 AM
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Re: New Check Engine Light

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Originally Posted by Classyjeeper View Post
Well code p20ee

Waiting on my new catalytic

Of course on backorder


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Another P20EE! Geeez. Several of us have them. My service appointment is in three days. I am going to see what happens if I do a 60 mile non-stop drive at 55mph which is supposed to reset the SCR.

I drove very little in September and wonder if that contributed to the problem.
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  #42  
Old 10-03-2014, 10:37 AM
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Re: New Check Engine Light

I had my catalytic converter replace about 3 months ago. They had "level 2" support in it for about 2 weeks. Last month we took a trip from the Central Valley to San Diego for a appointment and had the DEF replace and an oil change before we left. 200 miles in "incorrect def see dealer message" came up. Stopped in Bakersfield for a room the car just shut off. headed to Bakersfield to have def replaced. Dropped off at home dealership and was in for another 2 weeks to sort everything out. Once again they checked the rig and decided to replace the NOX sensors (not sure if I spelled that right) 2 week back order! Vehicle is working great so far and no issues if that helps.


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  #43  
Old 10-03-2014, 05:36 PM
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Re: New Check Engine Light

The procedure to reset the SCR system by driving 60 miles at 50-60mph may be golden words. I did that today after clearing the code and the MIL is now off after stopping and starting. However, the Torque App still shows the P20EE code as active. At least the MIL is off.

BTW, I saw it do two regen's while the MIL was on with the P20EE.
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  #44  
Old 10-03-2014, 09:25 PM
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Re: New Check Engine Light

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Originally Posted by mtnmerlin View Post
The procedure to reset the SCR system by driving 60 miles at 50-60mph may be golden words. I did that today after clearing the code and the MIL is now off after stopping and starting. However, the Torque App still shows the P20EE code as active. At least the MIL is off.

BTW, I saw it do two regen's while the MIL was on with the P20EE.
I'm afraid you are simply experiencing the normal cycle for setting the CEL from a pending code. The CEL comes back after a certain number of drive cycles and/or miles *IF* the onboard emissions testing is still failing. My experience has been that the P20EE code occurs because the SCR system (DEF system and Catilytic Converter) is operating below efficiency. Mine would take 130 to 170 miles to turn the CEL on after a reset.

I've been saying there is a problem with the Catilytic Converter for a while now. Either the cat converter is defective, the system design is flawed, or there is something physically damaging them. Unlike gas engine cats, ours is not mounted upstream in a protected location near the engine but is located low between the rear wheels. It operates at 500-650F but spikes to 1200F due to the upstream DPF temps during regen. Thermal stress and mechanical impact are the top killers. If you tap the converter and hear rattling, it's internally damaged. Impact from road debris can cause this. Also quickly quenching the high temperature with water can crack the ceramic honeycomb catalyst.

With its low location, I would not recommend driving into deep water or spraying water directly into the pipes when washing especially right after a regen. The dual tailpipes angle down a short run of pipe to the cat.

Those are just my suggestions for precautions until we know exactly why the cat is failing so frequently.
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  #45  
Old 10-03-2014, 10:14 PM
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Re: New Check Engine Light

I've got about 2500 miles since my cat was replaced and have had no issues. I guess my big question now is: should I expect to replace the catalytic converter every 5-10,000 miles?


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  #46  
Old 10-04-2014, 10:46 AM
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Re: New Check Engine Light

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I've got about 2500 miles since my cat was replaced and have had no issues. I guess my big question now is: should I expect to replace the catalytic converter every 5-10,000 miles?
We don't know yet. We have one member on here ( Treeguy) that has 41k on his '14 GCD with original cat. Several of us have had replacements at 5k to 20k. In the next 6 to 12 months we'll find out.

For now, I'm avoiding anything that will thermally stress the cat.
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  #47  
Old 10-04-2014, 01:37 PM
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Re: New Check Engine Light

I remember when we were getting the first release last year there was a lot of discussion about a chapter in the manual delineating turbo cooling time vs. engine strain/rpm; approximately 1 minute of idling before engine shutdown. I know I don't typically wait very long to shut off the ignition. Any chance that is a contributor and those heat effects are being felt further downstream in the exhaust system?


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