Generator L-Terminal Circuit P1637 -- AIR System code PO410
#1
TECH Addict
Thread Starter
iTrader: (6)
Join Date: Nov 2001
Location: Tampa, Florida
Posts: 2,099
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I threw this code and another at the same time: P1637 Generator L-Terminal Circuit.
I don't know if there's a connection or if it's just coincidence but they did throw at the same time.
The P1637 code happened when the engine was off??![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
I've noticed that the battery charge runs low at times (I installed a new factory alternator and better battery as a result with no change).
Also my temperature during the day seems to be higher than it should be . . . I have a 160 Thermo with my fans set low (first stage on at 180 and second stage on at 185 - run like this for ~8K miles). I have 46K miles on my Firehawk now . . . could the age of my car's fans be affecting the temp? Or, what I fear, is this Generator circuit code screwing with my fans??
Regardless, what is the source of this code and fix?
I tried to give as much info as possible, sorry if it sounds jumbled.
Thanks!
I don't know if there's a connection or if it's just coincidence but they did throw at the same time.
The P1637 code happened when the engine was off??
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
I've noticed that the battery charge runs low at times (I installed a new factory alternator and better battery as a result with no change).
Also my temperature during the day seems to be higher than it should be . . . I have a 160 Thermo with my fans set low (first stage on at 180 and second stage on at 185 - run like this for ~8K miles). I have 46K miles on my Firehawk now . . . could the age of my car's fans be affecting the temp? Or, what I fear, is this Generator circuit code screwing with my fans??
Regardless, what is the source of this code and fix?
I tried to give as much info as possible, sorry if it sounds jumbled.
Thanks!
![Cheers!!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_cheers.gif)