OK to drive with check engine light and P1E09 and P1129 code

[jadmt]

so this evening I make a run to the store to grab some items for a 200 mile road trip in the morning and my check engine light comes on. I had filled up a couple days ago and have put about 27 miles since filling up and thought maybe cap was loose but don't think it was. I grabbed the code with a U-scan code reader so not sure how good it is. it gave me generic codes P0152 and P0138 as well as OEM codes P1E09 and P1129. safe to take the 200 mile trip? runs smooth. thanks.

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[Heimkehr]

I'd start replacing oxygen sensors, sooner rather than later. Start with the upstreams. Three of the four(!) CELs reference them as a potential source of the codes. There's also the one code that indicates a problem with the Manifold Absolute Pressure sensor.

One CEL would get my attention, as it should. I'd treat four of them as a show stopper until I identified and resolved the related issues. I personally wouldn't take that trip with the Jeep in its current condition, but that's a judgement call that only you can make.

 

[jadmt]

I'd start replacing oxygen sensors, sooner rather than later. Start with the upstreams. Three of the four(!) CELs reference them as a potential source of the codes. There's also the one code that indicates a problem with the Manifold Absolute Pressure sensor.

One CEL would get my attention, as it should. I'd treat four of them as a show stopper until I identified and resolved the related issues. I personally wouldn't take that trip with the Jeep in its current condition, but that's a judgement call that only you can make.

6 months old with 7500 miles....uggg

 

[Heimkehr]

6 months old with 7500 miles....uggg

I know the feeling, Jeff. I do. The short block in my YJ was replaced under warranty at approx. the same age/mileage as your '24. These things happen and we just have to deal.

At least the O2 sensors are a relatively non-invasive repair. This kit made the job straightforward when I replaced an upstream O2 sensor on my JLU.

 

[Old Dogger]

Yes, it's generally safe to drive a Jeep Wrangler JL with a steady check engine light, as long as the issue is minor. A steady check engine light usually indicates a non-emergency issue, such as a loose gas cap. However, driving with a non-flashing check engine light could lead to lower fuel economy and more expensive repairs in the future.
If the check engine light is flashing, it means there is a serious issue and you should not drive the vehicle. You should schedule service as soon as possible.

Jeff, why not take it into your Dealer, and get it fixed, before your trip?

 

[jadmt]

Yes, it's generally safe to drive a Jeep Wrangler JL with a steady check engine light, as long as the issue is minor. A steady check engine light usually indicates a non-emergency issue, such as a loose gas cap. However, driving with a non-flashing check engine light could lead to lower fuel economy and more expensive repairs in the future.
If the check engine light is flashing, it means there is a serious issue and you should not drive the vehicle. You should schedule service as soon as possible.

Jeff, why not take it into your Dealer, and get it fixed, before your trip?

my planned take off time is 5:30AM. I will be lucky if the dealer will be able to get me in any time soon.. oh well could be worse

 

[Old Dogger]

Either way, drive safe!!!!

 

[jadmt]

dealership told me to drive it and not worry about it. Can't get in until the 20th.

 

[alphawolff]

I DM'd you @jadmt. I'd strongly suggest removing your front fender liners and inspecting your downstream oxygen sensors for possible oil contamination due to a leaking valve cover(s). Incredibly common on the 3.6Ls, and I'm honestly surprised this is still an issue going into 2024. You usually see it pop up around 5000-15000 miles if they weren't tightened properly at the factory. Odd to see them both leaking, so I might be totally wrong. Definitely worth an inspection before your trip. If they are contaminated it will lead to the engine misfiring eventually, and I'd avoid driving it until it's repaired.


That being said, we HAVE been seeing a bad string of o2 sensors for the 2024s, so it might just be a set of bad sensors if they aren't contaminated.

 

[jadmt]

I DM'd you @jadmt. I'd strongly suggest removing your front fender liners and inspecting your downstream oxygen sensors for possible oil contamination due to a leaking valve cover(s). Incredibly common on the 3.6Ls, and I'm honestly surprised this is still an issue going into 2024. You usually see it pop up around 5000-15000 miles if they weren't tightened properly at the factory. Odd to see them both leaking, so I might be totally wrong. Definitely worth an inspection before your trip. If they are contaminated it will lead to the engine misfiring eventually, and I'd avoid driving it until it's repaired.


That being said, we HAVE been seeing a bad string of o2 sensors for the 2024s, so it might just be a set of bad sensors if they aren't contaminated.

no leaking in the area between valve cover and cylinder block they are shiny as new, not even any seepage anywhere along the valve cover.

 

[Heimkehr]

we HAVE been seeing a bad string of o2 sensors for the 2024s, so it might just be a set of bad sensors if they aren't contaminated.

To resolve a stubborn P1128 CEL, I replaced one of the upstream sensors on my 2.0T-equipped 2021 JLU at ~70K miles.

Based on my experience with long-lived sensors in my other vehicles, I thought that mileage figure was a rather abbreviated lifespan for an O2 sensor. Maybe not?

 

[jadmt]

so weird that both sides would fail at the same time, but maybe it is not so weird if there was a faulty batch of sensors.

 

[jadmt]

To resolve a stubborn P1128 CEL, I replaced one of the upstream sensors on my 2.0T-equipped 2021 JLU at ~70K miles.

Based on my experience with long-lived sensors in my other vehicles, I thought that mileage figure was a rather abbreviated lifespan for an O2 sensor. Maybe not?

I have been driving since the early 70's and I can only think of having to change a few sensors over the years and none on new vehicles.

 

[jadmt]

Just wanted to do an update..

took it in for my scheduled appointment. Service writer asked if I wanted to wait or get a ride. I said I would wait. about an hour later the service writer comes and gets me and says it was done and it was a software issue and that the update had been complete and I was good to go. I went to leave and the check engine light was still on. I went back in and said the light was still on. he called the tech who came and apologized and said he did the tbs's software update and that should have fixed it. He took it back in and a short time later came out and said they would order the O2 sensors and they should be here Monday. He said just bring it in tuesday morning and they would get to it right away.. He did say he did the update again and that even tho the check engine light went out it would probably come back on. He did say it was strange both sides went out at the same time. Any way I was overall happy with the service experience. .

 

[jadmt]

well the new O2 sensors were not the answer. Light came right back on. Tech said it has to be the ECM so they are ordering a new one..

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