Help!!! CEL came on after I came back from the dealer!

[cgar215]

2020 Jeep JT Sport with 58k miles. I turned on my jeep and had the auto start/ stop light come on, took it to the dealer and said it was both batteries that went out (thankfully both under warranty). I turned on my truck for the first time from coming back from the (about a day later) and I get all sorts of CEL codes. Codes are :
P0850- Park/Neutral switch input circuit
C212A -System Voltage / Circuit Voltage Above/ Below Threshold

and I got transmission codes:
P1B13- Unkown Issue
P1DB6- Unkown Issue
P0850- Park/Neutral switch input

and input will be greatly appreciated thanks!

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[Vtur]

Bring it back. Maybe something is loose.

 

[Mr._Bill]

Disconnect the Aux Battery Negative cable. Separately charge each battery. Reconnect the cable and see what it does. I'm guessing issues from the dealer installing batteries that were not fully charged. It could be something else. Having the batteries charged will help things along if you have to go back to the dealer.

 

[cgar215]

Disconnect the Aux Battery Negative cable. Separately charge each battery. Reconnect the cable and see what it does. I'm guessing issues from the dealer installing batteries that were not fully charged. It could be something else. Having the batteries charged will help things along if you have to go back to the dealer.

I will try this, just doesn’t make sense, I picked it up yesterday from the dealer and it’s already doing this, it was about a 40min drive with traffic but guessing it wasn’t enough to juice up the batteries

 

[Stan H]

I will try this, just doesn’t make sense, I picked it up yesterday from the dealer and it’s already doing this, it was about a 40min drive with traffic but guessing it wasn’t enough to juice up the batteries

It takes many hours to charge them .

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