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Old 05-13-2014, 05:06 PM
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2014 Grand Cherokee Diesel Check Engine Light

My Check Engine Light (MIL) just came on. We have 5,160 miles on the jeep. Have always bought name brand (USA and Safeway) diesel and nothing seems to be amiss - except the MIL. (mileage has not dropped, voltage and temps are all OK, oil is full, etc.) The only thing that has changed is that my oil change alert has come on - but not at the same time as the MIL.

The Jeep is a 2014 Grand Cherokee, EcoDiesel.

According to the manual, the MIL can sometimes just come on. They suggest waiting for 'several of your typical driving cycles' before having the jeep serviced.

I have already scheduled a service for day after tomorrow - but this seems a bit odd.

Any ideas why the MIL came on?
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Old 05-16-2014, 07:22 PM
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Quote:
Originally Posted by scm68gt View Post
My Check Engine Light (MIL) just came on. We have 5,160 miles on the jeep. Have always bought name brand (USA and Safeway) diesel and nothing seems to be amiss - except the MIL. (mileage has not dropped, voltage and temps are all OK, oil is full, etc.) The only thing that has changed is that my oil change alert has come on - but not at the same time as the MIL.

The Jeep is a 2014 Grand Cherokee, EcoDiesel.

According to the manual, the MIL can sometimes just come on. They suggest waiting for 'several of your typical driving cycles' before having the jeep serviced.

I have already scheduled a service for day after tomorrow - but this seems a bit odd.

Any ideas why the MIL came on?
I had 600 miles on mine when it first came on. I've had it into the dealer three times now for this issue. I'm quite annoyed at this point.
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Old 05-16-2014, 08:52 PM
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Re: 2014 Grand Cherokee Diesel Check Engine Light

On my way to the dealer, I got another messgae ... something about the Exhaust filter getting full. Turns out I need to run the Jeep on the highway for at least 1/2 an hour - over 50 MPH - at least once per month. The dealership claims the MIL came on because of the exhaust filter issue. Who knew I needed to get on the highway and 'put the pedal to the metal' for a while.

We shall see if it stays off.
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Old 07-24-2014, 08:45 PM
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Re: 2014 Grand Cherokee Diesel Check Engine Light

I've been in 4 times for check engine light.

Getting frustrated!!!


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Old 07-27-2014, 06:54 PM
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Re: 2014 Grand Cherokee Diesel Check Engine Light

Question

The only modification I've done is muffler removal.

Would this cause check engine light?


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Old 09-16-2014, 03:53 PM
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Has anyone seen a check engine code T20EE dealership has been unable to resolve say it is more than just the nox sensor? Thanks in advance
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Old 09-16-2014, 04:38 PM
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Re: 2014 Grand Cherokee Diesel Check Engine Light

Mine has been the P20EE


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