P0003 code Almost got rear ended

[Creeper76]

Hello,

I have been trying to get more info on this. Our 2020 Jeep Wrangler has now been in the shop for 2 weeks. They could only recreate the problem once, but cannot get any other codes.

My wife was accelerating onto the highway and the 2.0t decided to bog down and lose power. She kept trying to go but it wouldn’t, while someone behind her almost wrecked her. She had to get off the gas and it would slowly accelerate.

I had her bring it home and remain running so I could hook my scanner up to it. Found a P0003, but nothing else. Took to dealer and they could not get any other codes. They put over 100 miles on the Jeep and had it happen once to them. They keep saying it won’t give a check engine light though (which it doesn’t).

They have no clue what to do as they said they cannot randomly change out parts. Now the wife is scared to drive the thing. We only had it for maybe 2 months now and it’s lived at the dealership more than we have had it home. Can someone @JeepCares create a case for us? This is totally ridiculous and unsafe. I saw so many people with this code, even on newer ones and they have no idea what to do or how to approach this “until it happens again so we can recreate it”.

Sponsored

 

[m3reno]

I had a similar issue but with a different vehicle. It drove perfect and randomly started to sputter and no power. Ten minutes later it drove fine. Ended up being the fuel pump.

 

[HHGadget]

First thing i would check are a voltage check AND a load test of the battery.

check the fuses in the under hood fuse box. On a car this young it may be something is loose or shorting out.

don’t know squat about the 2.0 turbo on the jeep but my other car is a Pontiac Solstice (gm) 2.0 liter LNF and “if” the 2.0 on the jeep is a DI motor you may want to check the fuel delivery between the low pressure fuel pump and high pressure fuel pump. Electrical connections to the pump.

On my Solstice, limp mode is usually indicative of boost leak. So checking your charge air system for the turbo would also be worth a look. Hoses, tubes and clamps can often come loose or were not properly torqued at the factory.

Here is some relevant info:
https://www.obd-codes.com/p0003

 

[Creeper76]

I had a similar issue but with a different vehicle. It drove perfect and randomly started to sputter and no power. Ten minutes later it drove fine. Ended up being the fuel pump.

I also thought the same thing as it being fuel pump related. Question is though is it the low or high side? I asked the service advisor does that sound like a fuel pump problem and she said well, it could be a wiring issue. Which that should have been easy to test for them. Then after all this she said the tech can only think it’s the fuel pump. So of course I asked which one. She said he thinks it’s possibly the low in-tank pump, but we cannot go and replace random parts in hopes to fix it.

As a caveat, on the last visit we paid to have them do the fuel system cleaning that they recommended due to the miles on it. She was quick to say no that would not have caused this issue. Well if the cleaner dislodged something in the tank and the pump sucked it up, couldn’t that cause a lack of pressure on the low pump?

 

[Creeper76]

First thing i would check are a voltage check AND a load test of the battery.

check the fuses in the under hood fuse box. On a car this young it may be something is loose or shorting out.

don’t know squat about the 2.0 turbo on the jeep but my other car is a Pontiac Solstice (gm) 2.0 liter LNF and “if” the 2.0 on the jeep is a DI motor you may want to check the fuel delivery between the low pressure fuel pump and high pressure fuel pump. Electrical connections to the pump.

On my Solstice, limp mode is usually indicative of boost leak. So checking your charge air system for the turbo would also be worth a look. Hoses, tubes and clamps can often come loose or were not properly torqued at the factory.

Here is some relevant info:
https://www.obd-codes.com/p0003

Thanks for this info! Yeah if Jeep refuses to do anything with this I am assuming the next step will be replacing the tank pump. It has close to 90k miles, so it may be in need of one.

I noticed when we got it back the wife started the Jeep and I had the hood up on it. The engine was bouncing around like crazy on a cold start. Perhaps that was a lack of fuel as well?

 

[Jeep4Win]

Did it accidentally get knocked into manual mode?

 

[Creeper76]

Did it accidentally get knocked into manual mode?

I saw a similar post to that as well and asked the wife if she touched the shifter at all and she said no. So ruling that one out. Also if they were able to recreate it once I’m assuming the tech would have known about that as well….I hope.

 

[JeepCares]

Hello,

I have been trying to get more info on this. Our 2020 Jeep Wrangler has now been in the shop for 2 weeks. They could only recreate the problem once, but cannot get any other codes.

My wife was accelerating onto the highway and the 2.0t decided to bog down and lose power. She kept trying to go but it wouldn’t, while someone behind her almost wrecked her. She had to get off the gas and it would slowly accelerate.

I had her bring it home and remain running so I could hook my scanner up to it. Found a P0003, but nothing else. Took to dealer and they could not get any other codes. They put over 100 miles on the Jeep and had it happen once to them. They keep saying it won’t give a check engine light though (which it doesn’t).

They have no clue what to do as they said they cannot randomly change out parts. Now the wife is scared to drive the thing. We only had it for maybe 2 months now and it’s lived at the dealership more than we have had it home. Can someone @JeepCares create a case for us? This is totally ridiculous and unsafe. I saw so many people with this code, even on newer ones and they have no idea what to do or how to approach this “until it happens again so we can recreate it”.

Thank you for tagging us. If you send us a PM, we will be able to create a customer care case for you and connect you with a specialist who can help.

Yenori
Jeep Cares

 

[Creeper76]

Thank you for tagging us. If you send us a PM, we will be able to create a customer care case for you and connect you with a specialist who can help.

Yenori
Jeep Cares

DM sent. Thank you Yenori

 

[alphawolff]

First thing i would check are a voltage check AND a load test of the battery.

check the fuses in the under hood fuse box. On a car this young it may be something is loose or shorting out.

don’t know squat about the 2.0 turbo on the jeep but my other car is a Pontiac Solstice (gm) 2.0 liter LNF and “if” the 2.0 on the jeep is a DI motor you may want to check the fuel delivery between the low pressure fuel pump and high pressure fuel pump. Electrical connections to the pump.

On my Solstice, limp mode is usually indicative of boost leak. So checking your charge air system for the turbo would also be worth a look. Hoses, tubes and clamps can often come loose or were not properly torqued at the factory.

Here is some relevant info:
https://www.obd-codes.com/p0003

i really hate posts like this, i understand you're trying to help but its just filled with wrong information. neither the battery nor fuses could cause this concern, nor the symptoms, and comparing it to a completely different make/model is always a bad habit.

Anyway, check the harness alongside the passenger side of your bellhousing to see if it's rubbed through. There's a tech 2 tech thread with this exact DTC and similar symptoms and that's what they found. It would explain the intermittent nature of it as well. If nothing is found replace the fuel pump

 

[Creeper76]

i really hate posts like this, i understand you're trying to help but its just filled with wrong information. neither the battery nor fuses could cause this concern, nor the symptoms, and comparing it to a completely different make/model is always a bad habit.

Anyway, check the harness alongside the passenger side of your bellhousing to see if it's rubbed through. There's a tech 2 tech thread with this exact DTC and condition, and that's what they found. It would explain the intermittent nature of it as well

Thank you Alpha. Later this evening I will crawl under there and see if I can see any fraying on the wires. They supposedly already checked the wiring, but we know how that goes sometimes.

 

[Creeper76]

i really hate posts like this, i understand you're trying to help but its just filled with wrong information. neither the battery nor fuses could cause this concern, nor the symptoms, and comparing it to a completely different make/model is always a bad habit.

Anyway, check the harness alongside the passenger side of your bellhousing to see if it's rubbed through. There's a tech 2 tech thread with this exact DTC and similar symptoms and that's what they found. It would explain the intermittent nature of it as well. If nothing is found replace the fuel pump

@alphawolff Okay it was hard to get in there and tell, but immediately upon looking up, this smaller wiring harness was laying right on the sharp edge of the bellhousing just like you said. It almost does look like it has a little cut in it, but hard to tell. It goes into that black solenoid looking thing. Could this be the issue? Thanks!!

 

[HHGadget]

@AlphaWolf i defer to your expertise on the jeep platform however i have run into wonky issues with low or inconsistent power on multiple platforms and especially on my JL.
That “can” be a dying battery and / or inconsistent current, more to your point that can also be worn or shorted harnesses and dirty connecters to sensors.

for myself, when troubleshooting possible electrical issues, i always start by checking off the basics which starts with the condition of the battery and clean continuity (which includes the fuse box) and inspection of the grounding points.

From a DIY standpoint these are free and easy checks to do assuming one owns a basic multimeter and honestly should be checked on occasion regardless if you haven't done so in a long while. Regardless of make or model but especially on a vehicle more inclined to experience “the elements” during use such as the jeep.

Apologies if those recommendations offend you and appreciate all you offer to the forum.

 

[alphawolff]

@alphawolff Okay it was hard to get in there and tell, but immediately upon looking up, this smaller wiring harness was laying right on the sharp edge of the bellhousing just like you said. It almost does look like it has a little cut in it, but hard to tell. It goes into that black solenoid looking thing. Could this be the issue? Thanks!!

Take a closer look at this area. That white mark on the harness indicates it could of possible been resting on the bellhousing. Make sure nothing is exposed and push the harness up and off the housing if you can. That broken retainer you mentioned isn't noteworthy.

 

[Creeper76]

Take a closer look at this area. That white mark on the harness indicates it could of possible been resting on the bellhousing. Make sure nothing is exposed and push the harness up and off the housing if you can. That broken retainer you mentioned isn't noteworthy.

sorry @alphawolff in my first pic I was just referencing where that smaller wiring harness is laying right on the edge of that sharp bellhousing area. I wasn’t sure what that actuator/regulator whatever that black circular part is that set of wires runs to.

I will get under there again with a better light and do more searching. Probably take my glasses with me too.

I was wondering, I am assuming if it is chafed it’s grounding out on the bellhousing right? That is the only thing causing the issue? What if I tape it and wire loom that harness up?

Thanks again!

Sponsored