Codes P0605 and P0700

Tiny
LANCE MCLEOD
  • MEMBER
  • 2001 CHRYSLER LHS
  • 3.5L
  • V6
  • AUTOMATIC
  • 98,000 MILES
TCM or ECM/PCM? Cleared codes came back stuck in one gear limp mode. I believe first time I used scanner some other online mechanic said TCM the scanner says ECM/PCM and I am just plain confused.
Tuesday, May 21st, 2019 AT 11:30 AM

41 Replies

Tiny
LANCE MCLEOD
  • MEMBER
  • 27 POSTS
Send pictures maybe.
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Tuesday, May 21st, 2019 AT 11:39 AM
Tiny
LANCE MCLEOD
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More.
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Tuesday, May 21st, 2019 AT 11:41 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Good afternoon,

First, the ECM and the PCM are the same.

The 605 code is the key and it is telling you it needs to be replaced from an internal failure.

You need a new PCM and have to flash it to your car.

Roy

1. Remove speed control servo and bracket and reposition out of the way.
2. Reposition wiring harness out of the way.
3. Remove washer bottle filler neck.

Fig.7 TCM Location
imageOpen In New TabZoom/Print

4. Remove Transmission Control Module (TCM) reposition out of the way.
5. Remove PCM
6. Disconnect PCM 2 40-way connector.

INSTALLATION
The PCM engine control strategy prevents reduced idle speeds until after the engine operates for 320 km (200 miles). If the PCM is replaced after 320 km (200 miles) of usage, update the mileage and vehicle identification number (VIN) in the new PCM. Use the DRB III scan tool to change the millage and VIN in the PCM. If this step is not done a diagnostic trouble code (DTC) may be set and SKIM must be done or car will not start if it is a SKIM equipped car. If a SKIM car you must do a secret key transfer also. Refer to the appropriate Powertrain Diagnostic and the DRB III scan tool.

1. Attach 2 40-way connector to PCM.
2. Install PCM. Tighten bolt to 4 Nm (35 in. Lbs.) Torque.
3. Install TCM.
4. Install washer bottle filler neck.
5. Reposition wiring harness.
6. Install speed control servo and bracket and tighten fasteners
7. Connect negative battery cable and reprogram radio and clock.
8. Using DRB III scan tool, program mileage and vehicle identification number (VIN) into PCM. Refer to the DRB III scan tool and the appropriate Power-train Diagnostic.
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Tuesday, May 21st, 2019 AT 12:46 PM
Tiny
LANCE MCLEOD
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  • 27 POSTS
Okay, needs new PCM if you order one on line and give them VIN number and mileage would it not then be plug and play? Just put in and work with out needing any more programming?
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Tuesday, May 21st, 2019 AT 1:05 PM
Tiny
ASEMASTER6371
  • MECHANIC
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I am not a fan of that at all. Sometimes it works and sometimes it does not. You may be lucky and it will be a plug and play. If it does not then it will need to be flashed.

Roy
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Tuesday, May 21st, 2019 AT 1:07 PM
Tiny
LANCE MCLEOD
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  • 27 POSTS
Where is the best place to get them?The dealer and how much would there's not be plug and play.
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Tuesday, May 21st, 2019 AT 1:24 PM
Tiny
ASEMASTER6371
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The dealer is an option but you can also get one through a parts store. You need to give them the number of the ECM so they can get you the exact item.

They would get you the ECM and then need to program.

About $300.00 for the ECM and $150.00 for the programming.

Roy
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Tuesday, May 21st, 2019 AT 1:47 PM
Tiny
LANCE MCLEOD
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Thanks Roy.
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Tuesday, May 21st, 2019 AT 2:00 PM
Tiny
ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
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Tuesday, May 21st, 2019 AT 2:07 PM
Tiny
LANCE MCLEOD
  • MEMBER
  • 27 POSTS
Well I did the PCM with part vin etc. Cleared all codes still in limp mode p0700 and p0605 eventually. Now I'm new play with scanner which should be able to read TCM but those are the only codes I can find in read codes. I did have one new one that said p0605 TCM fail. So I'm guessing I need to replace TCM? Will try and attach TCM reading picture. Also I have cleared codes in at least 3 places I've driven a short distance and the dash light was not lit, but I believe I found still found p0700. I've also have checked for codes car still in limp mode and no codes so with new P0605 TCM figured that is what it needs. I figured the scanner in live data or something to that effect reads input and out put rpm's I believe that and transmission temperature. So I'm pretty sure if I took to transmission shop they would not come up with any other codes than I did.
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Friday, May 31st, 2019 AT 6:40 PM
Tiny
LANCE MCLEOD
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Well I did the pcm with part vin ect. Cleared all codes still in limp mode p0700 and p0605 eventually now I'm new play with scanner which should be able to read tcm but those are the only codes I can find in read codes I did have one new one that said p0605 tcm fail so I'm guessing I need to replace tcm? Will try and attach tcm reading picture also I have cleared codes in at least 3 places I've driven a short distance and the dash light was not lit but I believe I found still found p0700 I've also have checked for codes car still in limp mode and no codes so with new P0605 tcm figured that is what it needs I figured the scanner in live data or something to that effect reads input and out put rpms I believe that and transmission temperature so I'm pretty sure if I took to transmission shop they would not come up with any other codes than I did
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Friday, May 31st, 2019 AT 6:48 PM
Tiny
ASEMASTER6371
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Did you use a new or used PCM?

Roy
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Saturday, June 1st, 2019 AT 4:51 AM
Tiny
LANCE MCLEOD
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  • 27 POSTS
I believe it would be considered refurbished from all computer resources still supposed to send old one back comes with limited life time warranty just had to do a key learn.
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Saturday, June 1st, 2019 AT 9:35 AM
Tiny
LANCE MCLEOD
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  • 27 POSTS
Also I believe if this is relevant P0700 was the only one I could find originally, after putting in pcm the P0605 tcm was in the review of dts and original the scanner pointed to pcm not tcm and because I still don't have any other transmission codes other than P0700 why I was thinking tcm also bad the car with the ignition codes only shows the p1684 and p0700 my scanner for some reason never showed the p1684.
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Saturday, June 1st, 2019 AT 10:46 AM
Tiny
ASEMASTER6371
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The 605 is for a failed PCM, not a TCM.

The 700 is a general transmission failure code and basically says there are other codes in the transmission module. They will be 700 codes.

Roy
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Saturday, June 1st, 2019 AT 11:43 AM
Tiny
LANCE MCLEOD
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Not sure why scanner said 605 tcm as in picture originally with old pcm it didn't have tcm with the 605 since that was the original question and I know 700 is generic for transmission and after I put pcm in there were no codes and was still in limp mode no light on dash and I believe after a small ride 700 showed up with no light on dash, after I was parked and I think it shows up on reading pcm codes and eventually going back and forth from pcm and tcm the engine light showed up again not moving and what I thought was odd is the tcm said it had no trouble codes. I never get anything cut and dry I think I am cursed. My nose don't work but my dad said the old pcm is fine and the tcm kinda has a slight burnt smell, and on that note I did open old pcm and it is filled with some type of semi clear brown once probably liquid that had a couple of small surface cracks that I would say caused from being 18yrs old and you can't even see the PC board since it is under all that liquid rubber lack of better term obvious it seals it from the weather but there was no visible damage which I would think would also not let a burt smell come out of it, so that is where I am at either the newer pcm is bad? Or slightly burnt smell tcm is bad not exactly sure where that 605 tcm came from. Think I'm going to have to put tcm back in and recheck all the codes again I guess I was just hoping it was the tcm since it doesn't seem on read tcm codes it doesn't have any. Sometimes I am probably getting side tracked I also once put pcm in had no codes and the car was still stuck like 2nd gear and there was no light on dash but got the 700 when I hooked up scanner eventually found the 605 under review dtc codes. I hate mysteries and the car only shows 1684 remove power no biggy and 700 it doesn't show the 605.
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Saturday, June 1st, 2019 AT 12:48 PM
Tiny
ASEMASTER6371
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Got it.

The 605 is an internal process error and needs to be replaced. You cannot see anything externally for the failure.

Rroy
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Saturday, June 1st, 2019 AT 12:58 PM
Tiny
LANCE MCLEOD
  • MEMBER
  • 27 POSTS
Yes I get that part what I can't figure out with certainty is I see with like a Chrysler pt cruiser or mini van with the same 700 and 605 codes its like a 50/50 split as to replace pcm and replace the tcm and I realize it is a generic code for all cars computer rom error and in one of those other one your self said it was a tcm partly why it drives me crazy lol and the other was until I replaced the pcm my scanner definitely did not have the p0605 with the internal tcm after it. And also 700 of course some where. In there was thinking I needed the tcm also. But if p0605 is definitely only associated with the pcm then I need to send the new pcm back and get another one is what I'm hearing. So I am going to put tcm back in make sure I erase all the data in the scanner and if it brings up both the 605 and 700 I need to send the pcm back and in the event I can only find the 700 like the dash of the car only gives me than I need a tcm. Correct me if I am wrong. Please
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Saturday, June 1st, 2019 AT 1:30 PM
Tiny
ASEMASTER6371
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If the TCM had failed, it would set a code for that as well. Since you have no other code, it is limited to the PCM.

You are on the correct track.

Roy
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Saturday, June 1st, 2019 AT 1:36 PM
Tiny
LANCE MCLEOD
  • MEMBER
  • 27 POSTS
Yes seems to be my luck pretty sure most people get 605 plus another code for get what it is that says the pcm is bad like 601 or something and most people get a 700 and something with that that will say tcm is bad or a transmission sensor but me I only get stuff that makes no sense at all which reminds me of a story my dad told me he worked at a big alarm company and they kept having problems with a alarm at some big house his guy's couldn't figure it out and he finally did and I have now idea how this was tied into the alarm system of the house but it was a bad ground in a under water light in the in the ground pool. And that is how my luck goes. I'd rather the engine blow up or transmission fall out on the ground. At least I would know lol
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Saturday, June 1st, 2019 AT 2:17 PM

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