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Old 10-09-2015, 02:06 PM
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Failure of EGR valve?

Hi All - I've already had my DEF injector, CAT, replaced but haven't been able to find anything on this one: MIL, Code P1297-00... Tech tested and concluded "failure of EGR valve". I literally had my CAT replaced two weeks ago so I'm wondering if this was the correct diagnosis. Anyone been through this one?

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Old 10-10-2015, 04:59 PM
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Re: Failure of EGR valve?

I had the P1297 multiple times on my 2014, it would come and go, dealer never found the problem. And I had cat, etc replaced. I found somewhere on this forum or online that code is the egr sensor (not the egr valve itself) which gets fouled and needs to be cleaned, or is defective and needs to be replaced. It's a $14 part. Got rid of vehicle before had a chance to try this fix. Would also use additives to seek better combustion.
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Old 10-10-2015, 05:44 PM
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Re: Failure of EGR valve?

Quote:
Originally Posted by kleyp View Post
I had the P1297 multiple times on my 2014, it would come and go, dealer never found the problem. And I had cat, etc replaced. I found somewhere on this forum or online that code is the egr sensor (not the egr valve itself) which gets fouled and needs to be cleaned, or is defective and needs to be replaced. It's a $14 part. Got rid of vehicle before had a chance to try this fix. Would also use additives to seek better combustion.
Thank you! May I ask how you were able to get rid of it? I would love to do the same but would incur a major loss. I guess I just need to bite the bullet.
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Old 10-11-2015, 12:33 AM
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Re: Failure of EGR valve?

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Originally Posted by dieseljimmy View Post
I posted this in echo7tangos thread on p20ee again and again etc.

Just curious see if it is a code P1297. I have had this before, ONLY once since the SCR replacement in Jan. It clears itself fairly quickly, within a day or two. When I had an oil change last month the dealer applied Service Bulletin 18-023-15 Rev. and it hasn't come back. That PCM patch covered a multitude of mil codes.

FWIW P1297 indicates EGR SLOW RESPONSE-DECREASING FLOW. The ECM is sensing the EGR flow is less than the requested flow. It is possibly caused by air filter blockage, air restriction (air intake, crankcase vent or turbo related tubes...restrictions, damaged or poor connections), air leakage(dealer has a smoke machine that introduces smoke via the Inlet Pressure Sensor port...after removing the I.P.S. and visually looking for escaping smoke), checking the EGR Cooler and Tubes for excessive carbon buildup, damage, leaks......anything the prevents or restricts proper exhaust gas flow. If everything so far is negative: Replace the EGR Valve. Hopefully yours was a software bug like mine. Good Luck.

UPDATE: After months of being code free the P1297 has returned with a vengeance. 7 times in the past 2 and 1/2 months and I am getting pi**ed off. The CEL comes on stays lit for 1-3 days and goes off. The code stays stored for a while and then poof it disappears from the cars memory. By the time the dealer has time to schedule me in I read my obdII scanner and the code is missing from the stored codes field. So it comes on and I go straight to the dealer and he works me in 2 days later. I don't drive much and the CEL is still on when I take it in. Dealer says new EGR needed, back ordered and I get a call 1 and 1/2 weeks later saying part is in. I will get it installed this week I hope and let you know the results.
ALSO

I have the infamous SHUDDER when going up slight hills while driving easy on the throttle. It goes away when I push the peddle down harder. Dealer says this is the cause for the shudder. We shall see. I will keep you posted. Hang in there.
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Old 10-11-2015, 05:39 AM
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Re: Failure of EGR valve?

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Originally Posted by dieseljimmy View Post
UPDATE: After months of being code free the P1297 has returned with a vengeance. 7 times in the past 2 and 1/2 months and I am getting pi**ed off. The CEL comes on stays lit for 1-3 days and goes off. The code stays stored for a while and then poof it disappears from the cars memory. By the time the dealer has time to schedule me in I read my obdII scanner and the code is missing from the stored codes field. So it comes on and I go straight to the dealer and he works me in 2 days later. I don't drive much and the CEL is still on when I take it in. Dealer says new EGR needed, back ordered and I get a call 1 and 1/2 weeks later saying part is in. I will get it installed this week I hope and let you know the results.
ALSO

I have the infamous SHUDDER when going up slight hills while driving easy on the throttle. It goes away when I push the peddle down harder. Dealer says this is the cause for the shudder. We shall see. I will keep you posted. Hang in there.
I am pretty sure there is a TSB for your shudder: 09-006-15. I would print out a copy of it and request they take a look at it as well when they replace your EGR. The EGR should have NOTHING to do with the shudder.
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Old 10-11-2015, 07:03 PM
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Re: Failure of EGR valve?

Quote:
Originally Posted by dieseljimmy View Post
UPDATE:

I have the infamous SHUDDER when going up slight hills while driving easy on the throttle. It goes away when I push the peddle down harder. Dealer says this is the cause for the shudder. We shall see. I will keep you posted. Hang in there.
I'm in the same boat with the egr part on back order. The dealer said it's safe to drive. I mentioned that I have a diesel smell in the cabin and they told me that the egr is probably causing that issue...well sure enough there is a TSB on that issue too!
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Old 10-12-2015, 06:02 AM
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Re: Failure of EGR valve?

P1297 is EGR slow response decreasing air flow. It is slow to close the valve when not needed. Most likely from heat cycling and soot buildup in the egr system. Our recommendation for a long term fix is the Green Diesel Engineering hot tune, the egr will just remain off and no more intake soot build up. There are a host of other benefits with our tuning including 3-5 mpg gain, more performance, and less turbo lag. We have 100% satisfaction thus far.
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Old 10-12-2015, 08:03 AM
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Re: Failure of EGR valve?

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Originally Posted by BrokenEcodiesel View Post
I'm in the same boat with the egr part on back order. The dealer said it's safe to drive. I mentioned that I have a diesel smell in the cabin and they told me that the egr is probably causing that issue...well sure enough there is a TSB on that issue too!
I have diesel smell in the cabin when idling with windows closed as well - so it maybe the EGR backing up and not closing all the way. What TSB is for this issue?
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Old 10-12-2015, 11:07 AM
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Re: Failure of EGR valve?

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Originally Posted by jaje View Post
i have diesel smell in the cabin when idling with windows closed as well - so it maybe the egr backing up and not closing all the way. What tsb is for this issue?
tsb # 24-001-15
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Old 10-13-2015, 01:56 PM
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Re: Failure of EGR valve?

This is why I don't believe the EPA wants light duty diesels anymore, they know the EGR sends diesel soot (carbon) back into the engine caboning it up. Maybe LandRovers new high-pressure EGR setup will do the trick by at least sending treated exhaust through the EGR, hopefully reducing a lot of the diesel soot.

The key otherwise minimizing carbon build up (CBU) is to maximize the combustion. Stanadyne Performance Formula helps boost cetane while also providing additional lubricity and protection to the diesel injectors; there are others out there that do similar things, but I use Stanadyne with every fill, myself.
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Old 10-14-2015, 06:12 PM
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Re: Failure of EGR valve?

We just need to be smarter about EGR. For example, the new Rover diesel takes the gases from AFTER the DPF so it is much cleaner. I think that, and some sort of OE catch can will nearly eliminate oily carbon buildup in turbos/intercoolers/piping/EGR/valves/cylinders. Until that happens, it's an electronic delete for me, thanks GDE!
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