Engine

[HburgStinger]

I have a 2019 GT. I’ve replaced plugs, coil packs and pcv valve. My car will be running fine and out of no where goes into limp mode and the check engine light comes on. I pull over turn off engine and turn it back on car runs fine for a while. At times it’ll do it a few times and I gotta use my jb4 app to get engine light to go off. It was doing it before I replaced everything and it’s still doing it. Does anyone know what is causing it so I can fix the issue?

 

[bfglitch]

Do you know what the actual code is that caused the check engine light? Without that, how in the world are we supposed to know? Use your JB4 app to read the code and provide what the code is instead of just clearing it.

 

[NS_Stinger]

Edit: just realized you have a engine light after ai gad wrote the note below. 100% pull the code and let us know what it is first.

The first thing I'd do is remove your JB4 amd run the car for a while to see if the problem goes away. If the problem goes away after that then you know it's JB4 related. Do you go into limp only when youre running the car hard? Or will it just go into limp randomly?

 

[Kodiack]

Do you have anything aftermarket besides the JB4?
Sounds like you threw alot of money at it without knowing the actual issue, I hope you didnt throw away the coil packs you replaced....Im sure they were fine.
Sounds like it could be an overboost issue...pay the diagnostic fee for a legit mechanic.
A good tool can give you real time data of what going on when the limp mode kicks in. And they can read historic codes that were cleared.

 

[NS_Stinger]

Do you have anything aftermarket besides the JB4?
Sounds like you threw alot of money at it without knowing the actual issue, I hope you didnt throw away the coil packs you replaced....Im sure they were fine.
Sounds like it could be an overboost issue...pay the diagnostic fee for a legit mechanic.
A good tool can give you real time data of what going on when the limp mode kicks in. And they can read historic codes that were cleared.

Agree on the overboost which is why I asked if it happens on heavy throttle.

 

[HburgStinger]

Do you know what the actual code is that caused the check engine light? Without that, how in the world are we supposed to know? Use your JB4 app to read the code and provide what the code is instead of just clearing it.

The issue seems to be happening more frequently. So today I filled up with gas and it happened to me 4 times on my way home. I took pictures of the codes. First time it happened these are the codes I got P0302,P0603,P00AA,PAA00. Second time P0300 other 2 was the same 4 codes as the first time. It has never done it when driving it hard. When this issue started it seemed to only do it when my fuel level got low.

 

[HburgStinger]

Agree on the overboost which is why I asked if it happens on heavy throttle.

Air intakes, oil catch can, muffler delete and BMS throttle control. I’ve saved everything that I’ve taken off.

 

[HburgStinger]

Do you have anything aftermarket besides the JB4?
Sounds like you threw alot of money at it without knowing the actual issue, I hope you didnt throw away the coil packs you replaced....Im sure they were fine.
Sounds like it could be an overboost issue...pay the diagnostic fee for a legit mechanic.
A good tool can give you real time data of what going on when the limp mode kicks in. And they can read historic codes that were cleared.

Air intakes, oil catch can, muffler delete and BMS throttle control. I’ve saved everything that I’ve taken off.

 

[Kodiack]

Did you remove the JB4 like was recommended and see if its persists?
I would do that and check all connections...thats alot of random codes

 

[Sickicks]

Air intakes, oil catch can, muffler delete and BMS throttle control. I’ve saved everything that I’ve taken off.

Bro, exact f*cking codes today. Got it towed. Were your gears and shifts weird? How did you fix it?

 

[Alpinesting]

P0302 is cylinder 2 misfire. I know this code well.

 

[Sickicks]

The issue seems to be happening more frequently. So today I filled up with gas and it happened to me 4 times on my way home. I took pictures of the codes. First time it happened these are the codes I got P0302,P0603,P00AA,PAA00. Second time P0300 other 2 was the same 4 codes as the first time. It has never done it when driving it hard. When this issue started it seemed to only do it when my fuel level got low.

Did u ever figure this out? Had the same codes, cleared and toom to mechanic gave them codes they couldnt figure it out