Code P2305?

MGOLDE57

MEMBER
2008 JEEP WRANGLER
3.8L
V6
4WD
AUTOMATIC
87,500 MILES

I replaced plugs, wires and coil. I'm still experiencing misfires. Could the problem be the PCM?

Saturday, September 2nd, 2023 AT 10:21 AM

2 Replies

KEN L

MASTER CERTIFIED MECHANIC
50,764 POSTS

The P2305 trouble code is a generic powertrain code that indicates a problem in the ignition coil "B" secondary circuit. So, it will be a wiring issue or a bad PCM.

Here is a guide to help you test the wiring between the coil and PCM and the PCM/coil wiring diagrams below to help you with the test:

https://www.2carpros.com/articles/how-to-check-wiring

If the wiring is good here is how to change the PCM out, this guide may help as well. You can get a preprogrammed unit by searching Google or Ebay.

Check out the images (below). Please let us know how it goes.

Images (Click to make bigger)

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Saturday, September 2nd, 2023 AT 6:32 PM

GEEZYY

MEMBER
3 POSTS

Yes, it the PCM.

The notorious Chrysler P2305 issue, often accompanied by P03XXX codes, where it temporary fix problems when replacing the coil and/or spark plug, only to return later, is in 99.95% of cases, a faulty PCM.

You can get a PCM online for $300 + core.

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Monday, December 23rd, 2024 AT 4:01 AM