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05WK 10-28-2012 07:48 PM

Threw a code....... P0700
Yesterday my ol' check engine light came on. I didnt have time to check, but later that night it was off.

Today, it comes back. I check it with my SCT tunner ( :D ) and it says P0700 but no additional info. I use the all mighty search tool on the site and find out it has to do with the TCM. im a little scared now. I tuned my jeep back to stock and in doing so it clears the codes. I'l wait a couple of days to see what happens.

Anyone else had this code come and go?

The jeep shifts fine, runs smooth, just like normal. I read that it is caused from the shifter bezel thing and needs to be replaced, $600-700, or taken apart and cleaned. Have any other solutions been found for this code??

Madanio24 10-28-2012 08:47 PM

Re: Threw a code....... P0700
Have u done any recent mods to your jeep?

firebirdsix7 10-28-2012 10:39 PM

Re: Threw a code....... P0700
The other day mine threw a P0700, a P0158, and another one that I can't recall, but they were all related to the system voltage more or less. Weird I know, but my transmission guy plugged his tool in, and for unknown reasons the P0700 was stored on the engine side as a pending, not an active code... I hadn't driven it in a week or so, and without really thinking about it cranked my stereo up shortly after taking off. But, i have a 545RFE, so it may be something else.

05WK 10-28-2012 10:47 PM

Re: Threw a code....... P0700
No recent mods, and by voltage do you mean lack there of?

Yeah, i have the NAG1.

I havent done anything extra ordinary recently that i think could cause that. The only thing is that we had a complete sudden temperature drop. From averages of 80+ to freezing temps the past two days. Which is actually when it started......

dr.lee.baugh 10-29-2012 08:45 AM

Re: Threw a code....... P0700
The P0700 is simply the generic trouble code indicating the TCM has stored a fault.

It could be the shifter bezel, line pressures, slow engagement, incorrect ratios, etc., etc., etc. Anything wrong with the transmission will throw a P0700, and you'll need to take it to a place with a much better scan tool to pull it.

I would start by checking to make sure the transmission fluid is at the correct level - with such a swing in temperatures, it could be the fluid has contracted enough when starting cold to cause some issues.

If the trans level is fine, just wait and see if it comes back. If it does reappear, take it to a trans shop or the dealer to have them pull the code - you'll be swinging in the dark otherwise.

firebirdsix7 10-29-2012 03:15 PM

Re: Threw a code....... P0700
Yeah, the voltage was a bit low, so it apparently spurred a code. I had the starter, alternator and the battery voltage checked, and all passed. Haven't had any problems with it since then.

05WK 10-29-2012 08:24 PM

Re: Threw a code....... P0700
Yeah, de-tuned the vehicle to be safe, and the code has come back. I work at a NTB so ill have them pull the code if it comes back.

robpp 10-30-2012 09:39 AM

0700 is a generic code from trans module. Auto parts reader won't go that deep. You will need a starscan or witech from a stealer to read those codes.

MRLOWOFFSETT 10-30-2012 06:17 PM

Re: Threw a code....... P0700
I threw a P0700 and P2767(turbine speed senser)No light now but I'm taking it to the shop friday..would this cause the truck to downshift when it's not supposed to?

05WK 11-01-2012 12:43 AM

Re: Threw a code....... P0700
Had my mechanic check he trans and the fluid level seemed fine so I'm gonna have him do a flush and maybe that will prevent it from happening again.

Engine light hasn't returned, but better to be proactive.

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