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Bad PCM?

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New User

May 8, 2017, 9:11 AM

Post #1 of 3 (712 views)
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Just started my 2006 Ford Taurus and ABS, brake light, battery light, and check engine light came on. Thought it was the alternator but checked out OK. Tried both of my OBD II testers, but no communication to the PCM. Car runs but have noticed some hitching in the transmission. I checked all fuses and wires, they are fine. Do I have a bad PCM?

Ultimate Carjunky / Moderator
Discretesignals profile image

May 8, 2017, 9:36 AM

Post #2 of 3 (697 views)
Re: Bad PCM? Sign In

You're probably going to have to take it to a shop that has an enhanced scan tool to see if the PCM isn't the only thing that can't be communicated with. Troubleshooting network issues is beyond the scope of DIY.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

New User

May 8, 2017, 10:12 AM

Post #3 of 3 (691 views)
Re: Bad PCM? Sign In

Thanks for the reply. Guess I'm going to have to do that. Also saw that miles to E and my car miles are both blank, just hash marks.

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