Two weeks and 470 miles of Jeep ownership and already a Check Engine Light

[WILDHOBO]

I've driven about 300 of the 1300 miles with a CEL. I traded in a 2016 BMW that NEVER had any CELs, and now I have a Jeep with 1300 miles, and I've had a CEL lit up on my dash for about 25% of the time. It's maddening. I knew better than to buy a Jeep, but I couldn't help myself. I'm about to find a 10mm wrench here at work and disconnect the battery.

Jeep isn’t worse than bmw just because you got unlucky and ended up with a code. If it’s a misfire, the most they need to swap is coil packs and spark plugs. I got a couple and fixed it myself, but I was over 60k miles. My point is that you’ve likely got an awesome jeep that you’ll love forever. Just let them fix it.

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[WILDHOBO]

I've driven about 300 of the 1300 miles with a CEL. I traded in a 2016 BMW that NEVER had any CELs, and now I have a Jeep with 1300 miles, and I've had a CEL lit up on my dash for about 25% of the time. It's maddening. I knew better than to buy a Jeep, but I couldn't help myself. I'm about to find a 10mm wrench here at work and disconnect the battery.

You’ll also need a 13mm. To disconnect the battery you need to disconnect all the negative wires from each other. Otherwise the aux battery will continue to power everything. But it won’t fix misfires. They’ll come back. If those are misfire codes, and they look familiar, I’d ask them to replace all 6 coil packs and plugs. They might want to only replace the problem cylinder(s), but I’d argue that if one is bad from the factory, at least another one probably is. And they should be reminded that they only want to pull that upper intake manifold once.

 

[Splenda]

Jeep isn’t worse than bmw just because you got unlucky and ended up with a code. If it’s a misfire, the most they need to swap is coil packs and spark plugs. I got a couple and fixed it myself, but I was over 60k miles. My point is that you’ve likely got an awesome jeep that you’ll love forever. Just let them fix it.

It's not the same code. Not the same circumstances. The other ones were on startup and would not allow me to shift into gear. This one came up after I started the Jeep and let it run for about 2 minutes to warm up a little. It made a weird low pitch sound from the engine and almost stalled. I tapped the gas, and the CEL came on. I wish I had read those other codes before they went away on their own. This one is sticking around. I can't even use my remote start, and it's snowing here.

 

[ShadowsPapa]

Jeep isn’t worse than bmw just because you got unlucky and ended up with a code. If it’s a misfire, the most they need to swap is coil packs and spark plugs. I got a couple and fixed it myself, but I was over 60k miles. My point is that you’ve likely got an awesome jeep that you’ll love forever. Just let them fix it.

No codes at all with my 2020
The only codes with my 2022 were easily fixed -
The random goofy CANbus error/communication related codes were resolved by reseating the connections of the star connector behind the glove box
and
the misfire (and thus related MILs/codes) were resolved with a dealer visit where they forced a CCDIFF relearn.
Problems solved.
No codes in the over 20,000 miles since.

 

[WILDHOBO]

It's not the same code. Not the same circumstances. The other ones were on startup and would not allow me to shift into gear. This one came up after I started the Jeep and let it run for about 2 minutes to warm up a little. It made a weird low pitch sound from the engine and almost stalled. I tapped the gas, and the CEL came on. I wish I had read those other codes before they went away on their own. This one is sticking around. I can't even use my remote start, and it's snowing here.

That sounds exactly like misfires. When I had misfires due to bad coil packs, the cel stuck around until resolution, and it ran like sh1t.

 

[Splenda]

You’ll also need a 13mm. To disconnect the battery you need to disconnect all the negative wires from each other. Otherwise the aux battery will continue to power everything. But it won’t fix misfires. They’ll come back. If those are misfire codes, and they look familiar, I’d ask them to replace all 6 coil packs and plugs. They might want to only replace the problem cylinder(s), but I’d argue that if one is bad from the factory, at least another one probably is. And they should be reminded that they only want to pull that upper intake manifold once.

I'm not getting misfires. I just drove it home, ate dinner, then drove back to work. It drives fine. Just has a CEL and can't use remote start.

 

[WILDHOBO]

I'm not getting misfires. I just drove it home, ate dinner, then drove back to work. It drives fine. Just has a CEL and can't use remote start.

What’s the code causing this one?

 

[Splenda]

P0132 and P1128

 

[WILDHOBO]

What’s the code causing this one?

Also, the smallest thing will disable remote start, including being lower than 1/8 of a tank.

 

[WILDHOBO]

P0132 and P1128

Stand by….

 

[Splenda]

Also, the smallest thing will disable remote start, including being lower than 1/8 of a tank.

Half tank of gas.

 

[WILDHOBO]

Half tank of gas.

Mine remote starts unless it gets down to 1/8th.

 

[WILDHOBO]

P0132 and P1128

O2 voltage high, and closed loop fuel loop not achieved. I’d say related. Maybe factory defective o2 sensor, or a real fuel problem. I found several people online say these two codes usually come together. I’d bring it in. I bet it’ll be a quick fix.

 

[Splenda]

We'll see if it comes back. I pulled the positive off the battery and pulled all the negative cables apart and disconnected the main connection, waited 5 minutes, then reconnected everything and it started up, no codes. I drove it around the parking lot, seems fine. I guess I will see when I leave work in a couple hours. The codes came up the first time I ever started it in the cold. Up until today it's either been warm or I didn't drive it, and it stayed in the garage. It has not even been driven in the rain yet.

 

[ShadowsPapa]

That sounds exactly like misfires. When I had misfires due to bad coil packs, the cel stuck around until resolution, and it ran like sh1t.

I'd bet that misfire stored code would prevent remote start. Just a gut feeling.
In your case, if the coil pack(s) was/were bad, it's not likely to settle down long enough to let the codes clear like it did with mine.
Mine was a hot restart misfire. It was perfect when started cold. That meant that the thing usually cleared all by itself. Tough to catch in the act. Then I finally left everything in place and ran JSCAN on my phone in the holder so it was always displaying misfires and more any time I started and drove it.
During the times that misfire code was in the system, there were other things that wouldn't work.

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