cel and P0700 code

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Jan 25, 2024 | 06:19 PM

Silver31581

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From: Topeka, KS

cel and P0700 code

I have a 2021 C8 Z51 with nearly 15,000 miles. I got a cel light with some driving issues. Checking the OBD for codes I found a P0700 code #711. It looks like a DCT code. I tried pulling the negative battery cable for 15 seconds. No help. Any ideas?

Jan 25, 2024 | 06:26 PM

Red9132

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Joined: Oct 2017

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From: Tulsa, OK

I got the same code today. Mine is a 24 with 1200 miles on it. Just dropped it off at the dealership and they are hoping to look at it tomorrow.

Jan 25, 2024 | 06:33 PM

Silver31581

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From: Topeka, KS

Did you have any driving issues when the cel came on?
Good luck tomorrow!

Jan 25, 2024 | 07:01 PM

Red9132

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From: Tulsa, OK

No, it seemed to be driving fine. I wasn’t being too hard on it since the check engine light was on, but it drove and shifted smoothly. How was yours?

Jan 25, 2024 | 07:06 PM

Silver31581

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From: Topeka, KS

It stumbled, lost power occasionally and had jerky shifting at the start. Then everything seemed to smooth out and it ran just fine.

Jan 28, 2024 | 10:50 AM

Red9132

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From: Tulsa, OK

Well, it looks like it might have been a false alarm. This is what they came back with.

“RUN SYSTEM CK AND FOUND P0700 STORED IN ECM AS HISTORY CODE. RUN SYSTEM CK AND FOUND U1608 STORED IN TCM FOR "UNKNOWN DTC" STORED AS HISTORY CODE. NO PROBLEM FOUND AT THIS TIME. STORED CODES CLEARD FROM ECM AND TCM AND ROAD TEST, ALL OK.”

They said it might have been a result of a spike in voltage or a drop in voltage. Mine continued to run fine after the light came on. I know yours didn’t, so I hope everything turns out okay for you, as well.

Feb 3, 2024 | 12:32 AM

Bob Paris

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From: Granada Hills CA

Quote:

Originally Posted by Red9132

Well, it looks like it might have been a false alarm. This is what they came back with.

For my '22 Z51 HTC, at around 300 miles, I had a CEL and "idle creep disabled" message displayed. When I got home I pulled the codes and then did a little online research. Possibly break-in contaminants were interfering with the DCT solenoids. CEL cleared later the same day so I assumed it was a fluke. Since car always drove fine and shifted normally, I did not visit dealer but drove another 7500 miles and then had the first service performed. Car has been flawless since this minor hiccup at 300 miles and I now have around 27,000 pleasure-filled miles on the car.

Last edited by Bob Paris; Feb 3, 2024 at 12:19 PM.