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P1682 #4636970
01/16/18 05:04 PM
01/16/18 05:04 PM
Joined: Nov 2004
Posts: 1,858
SD
zrxkawboy Online content OP
zrxkawboy  Online Content OP
Joined: Nov 2004
Posts: 1,858
SD
'07 Silverado 5.3. This morning, I started it using the key, and took my kids to the bus stop just a short distance away. Came home, ate some breakfast, and went to start the truck with the remote starter so I could go to work. (It was -9F outside.) The lights came on in response to the remote, but it did not attempt to crank. Another try gave the same result. I went out and started it using the key (started fine), and noticed the CEL was on. I am positive it was NOT on when I got home from the bus stop.

I scanned it over my lunch break and found a P1682. (An explanation for the code is here: https://www.engine-codes.com/p1682_chevrolet.html )

I cleared the code, and it hasn't come back through a couple of key starts and a couple of remote starts. Anyone have experience with this code? Any chance it could have been due to slightly lower battery voltage (due to the cold)? Thanks in advance.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: P1682 [Re: zrxkawboy] #4636975
01/16/18 05:09 PM
01/16/18 05:09 PM
Joined: Nov 2006
Posts: 20,577
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,577
MA, Mittelfranken.de
At that low temp it could be a one time thing, no panic see what happens.


ASE L1, Master. Deutsch Meisterbrief.
Re: P1682 [Re: zrxkawboy] #4637198
01/16/18 08:43 PM
01/16/18 08:43 PM
Joined: Nov 2004
Posts: 1,858
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zrxkawboy Online content OP
zrxkawboy  Online Content OP
Joined: Nov 2004
Posts: 1,858
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Thanks, Trav. I was hoping so, but thought it was maybe wishful thinking. Appreciate your input.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: P1682 [Re: zrxkawboy] #4637295
01/16/18 11:37 PM
01/16/18 11:37 PM
Joined: Nov 2016
Posts: 1,283
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,283
WI
I agree. At very very cold temps (like -15F to -20F without windchill) after it's been sitting outside for a few days my LR3 will say transmission fault when I first start it. Once it moves a bit and gets shut down and restarted it's fine. Anything warmer and it's fine. You try sleeping outside in that weather and let's see if you complain at all. smile


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: P1682 [Re: zrxkawboy] #4655616
02/04/18 08:55 AM
02/04/18 08:55 AM
Joined: Nov 2004
Posts: 1,858
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zrxkawboy Online content OP
zrxkawboy  Online Content OP
Joined: Nov 2004
Posts: 1,858
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Just wanted to update here for anyone who might be troubleshooting the same issue. My battery tested low using both my load tester and conductance tester. I think this was due to low temps plus not driving the truck much lately. I charged the battery and all has been well for over 2 weeks now. Thanks guys!


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: P1682 [Re: zrxkawboy] #4715612
04/03/18 09:05 PM
04/03/18 09:05 PM
Joined: Nov 2004
Posts: 1,858
SD
zrxkawboy Online content OP
zrxkawboy  Online Content OP
Joined: Nov 2004
Posts: 1,858
SD
OK, it's back. Similar scenario today: came home for lunch, all was well. Went to remote-start the truck to go back to work, and no go. Started with key, and had a CEL. Again, P1682.

After the last update, I had tested the battery, and it was somewhat weak, so I put in a new NAPA 84-month battery. So, apparently there is an intermittent issue here. Again, I have noticed no symptoms besides the CEL (truck start well, runs well, etc).

Any advice appreciated.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: P1682 [Re: zrxkawboy] #4715658
04/03/18 10:21 PM
04/03/18 10:21 PM
Joined: Dec 2013
Posts: 2,449
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,449
Fort Worth, Texas
Disconnect the battery!

Unplug & plug back in ALL the underhood fuse block junction connectors & the ECM connectors.
Swap the "RUN/CRANK" Relay with the "REAR DEFOG" Relay.
Swap the "PWR/TRN" Relay with the "PRK LAMP" Relay.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: P1682 [Re: clinebarger] #4715834
04/04/18 07:07 AM
04/04/18 07:07 AM
Joined: Nov 2003
Posts: 1,212
Middle of Iowa
DriveHard Online content
DriveHard  Online Content
Joined: Nov 2003
Posts: 1,212
Middle of Iowa
Originally Posted By: clinebarger
Disconnect the battery!

Unplug & plug back in ALL the underhood fuse block junction connectors & the ECM connectors.
Swap the "RUN/CRANK" Relay with the "REAR DEFOG" Relay.
Swap the "PWR/TRN" Relay with the "PRK LAMP" Relay.




This and go even a step further. Remove the entire underhood fusebox (its quite easy actually), and remove each fuse and relay and clean it with contact cleaner and re-assemble with di-electric grease. The underhood fusebox is not sealed and you will get corrosion on many of the fuses. This fixed the electrical niggles I was having this winter.


Smile, it increases your face value
2013 Fiat 500 Abarth mod heavy (my DD)
2018 Alfa Romeo Stelvio TI Sport (wife's)
2011 Silverado Crew Cab LT 6.2L/6spd (tow pig)
2007 Nissan Xterra (trail toy)
Re: P1682 [Re: zrxkawboy] #4716649
04/04/18 08:42 PM
04/04/18 08:42 PM
Joined: Nov 2004
Posts: 1,858
SD
zrxkawboy Online content OP
zrxkawboy  Online Content OP
Joined: Nov 2004
Posts: 1,858
SD
Thanks clinebarger and DriveHard, I will give these suggestions a try.


"Think of all the Ford owners who will someday want an automobile." John Dodge


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