Stuck in limp mode

ANGIEDUNIGAN

MEMBER
2003 DODGE CARAVAN
3.3L
V6
2WD
AUTOMATIC
145,000 MILES

AC locked up, replaced with bypass pulley, and now it is in limp mode. Dash codes p0601, p0645, p1684, p1698.
Please help

Saturday, October 13th, 2018 AT 1:21 PM

8 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

Hello,

It sounds like you have a ground wire off. Can you check to see if any ground wires were left off when you were doing the job?

Let me know, Ken

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Monday, October 15th, 2018 AT 5:21 PM

ANGIEDUNIGAN

MEMBER
6 POSTS

We have check all wires and not seeing any off or loose. Anything else I cud check? Also got a code.1003.1005 and 0.001.

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Wednesday, October 17th, 2018 AT 11:15 AM

ANGIEDUNIGAN

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6 POSTS

By the way, thank you for your response! Please help me figure it out.

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Wednesday, October 17th, 2018 AT 11:27 AM

ANGIEDUNIGAN

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6 POSTS

One more thing; all lights around shifter staying lit and airbag light came on.

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Wednesday, October 17th, 2018 AT 11:34 AM

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

Did you disconnect the battery when you did the job? If so you could have had a voltage spike which took out the PCM? Can you please give me the codes again? Some of them do not make sense.

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Thursday, October 18th, 2018 AT 9:39 AM

ANGIEDUNIGAN

MEMBER
6 POSTS

Yes we did disconnect, there are no problems with performance of van before the AC went out, but after replaced with pulley now it will not shift out, limp mode! Codes P0601, P0645, P1689, E1003, E1005 and E4001.
Thank you so much for your help and time!

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Thursday, October 18th, 2018 AT 2:15 PM

ANGIEDUNIGAN

MEMBER
6 POSTS

All lights around shifter light and airbag light on and was not doing that before the AC problem.

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Thursday, October 18th, 2018 AT 2:16 PM

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

It does sounds like you had a voltage spike that could have taking out the PCM/TCM. Let's check all fuses before we change it out though. Here is a guide and the fuse locations:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. Can you make sure the PCM and TCM are plugged in all the way? Remove the connector and reinsert.

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