SMOG check Fail. Please help identify these error codes.

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Dec 29, 2011 | 05:02 PM

Hotrod_ace

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SMOG check Fail. Please help identify these error codes.

I live in California and I'm trying to sell my Ford F250 7.3L which requires a smog check.
I just failed on account of these three error codes:
P0683
P0670
p1670
I recently had my glow plug relay and glow plug module replaced so I don't know why I'm getting these error codes.
Does any one have any experience with this so I can figure this out?
Thanks.

Dec 29, 2011 | 05:20 PM

duck fan

Because racetruck

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From: Monterey Bay, CA

Quote:

Originally Posted by Hotrod_ace

Double check both plugs on the GPCM. There is a green one and a black one. You do not have a Glow Plug relay so there wasn't one to replace

Dec 29, 2011 | 05:20 PM

Deluxe06

4000 rounds a min

Joined: Apr 2010

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From: Albemarle NC

Quote:

Originally Posted by Hotrod_ace

I live in California and I'm trying to sell my Ford F250 7.3L which requires a smog check.
I just failed on account of these three error codes:

P0683=Glow Plug Control Module to PCM Comm Circuit

P0670=Glow Plug Control Circuit Error

p1670=EF Feedback Signal not Detected

I recently had my glow plug relay and glow plug module replaced so I don't know why I'm getting these error codes.
Does any one have any experience with this so I can figure this out?
Thanks.

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Dec 29, 2011 | 05:28 PM

Shake-N-Bake

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From: Mesa AZ

I wonder why California is concerned about P1670? That one isn't even emissions related...

Dec 29, 2011 | 05:47 PM

Hotrod_ace

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Quote:

Originally Posted by Deluxe06

Reply in RED

Thanks for the codes. I just replace my GPCM last week. Now that I think about it, the smog technician did mention that it's a pending error code. I wonder if it's because it takes time to clear out. Maybe I need to drive it a little more.

Dec 29, 2011 | 05:48 PM

duck fan

Because racetruck

Joined: Apr 2007

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From: Monterey Bay, CA

Any codes at all are cause for an automatic fail in CA

Dec 29, 2011 | 05:49 PM

Hotrod_ace

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Quote:

Originally Posted by Shake-N-Bake

I wonder why California is concerned about P1670? That one isn't even emissions related...

I'm not sure either but he said he wasn't able to smog it because as soon as he hooked up the computer the truck shut off.

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Dec 29, 2011 | 06:00 PM

Hotrod_ace

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I wonder if the P1670 has anything to do with the truck hard starting lately. I charged my batteries overnight which helped but it doesn't seem to solve the problem. I'll have to look into that code a little more. I'm hoping that if I drive the truck a little more this weekend the other codes might go away. I've heard about drive sequences helping with this. Does anyone know how to do this?

Dec 29, 2011 | 06:02 PM

#10

Hotrod_ace

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Quote:

Originally Posted by Deluxe06

Have you got a way to clear them? If you do, clear them and drive it for a while and see if they come back.

My mechanic cleared them when he installed the new GPCM and the check engine light went out and hasn't come back on since. I'm not sure why I'm getting the pending error codes now.

Dec 29, 2011 | 08:43 PM

#11

Shake-N-Bake

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From: Mesa AZ

Quote:

Originally Posted by Hotrod_ace

I'm not sure either but he said he wasn't able to smog it because as soon as he hooked up the computer the truck shut off.

That could be caused by the VIN decifer routine. When I connect to AE, I have to manually input the year and engine type. If I try and let AE figure it out by decoding the VIN then the engine will shut off. Only happens on diesels...gas engines work everytime.