Error p1698 - check engine light on
12-13-2018, 11:13 AM
#1
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Error p1698 - check engine light on
Hey Guys,
I have another one for you. I already read all the related threads on the internet, yes, all of them. Out of nowhere, getting check engine light with code "P1689 - No Collision Detection Message from Transmission Control Module". I know this is a communication problem with PCM and TCM.
- I am having no issues otherwise, starts, drives, shifts and runs great
- Don't think it is a low voltage/charging issue. Tests at 12.46v when not running, 14.56 when running
- I refreshed all the grounds I could possibly find - all we already clean, but I still refreshed them. No frayed wires, no cuts or anything like that.
- No other symptoms
What do you guys think? Greatly appreciate any help - you guys are awesome and always seem to help me find a solution.
Thanks
I have another one for you. I already read all the related threads on the internet, yes, all of them. Out of nowhere, getting check engine light with code "P1689 - No Collision Detection Message from Transmission Control Module". I know this is a communication problem with PCM and TCM.
- I am having no issues otherwise, starts, drives, shifts and runs great
- Don't think it is a low voltage/charging issue. Tests at 12.46v when not running, 14.56 when running
- I refreshed all the grounds I could possibly find - all we already clean, but I still refreshed them. No frayed wires, no cuts or anything like that.
- No other symptoms
What do you guys think? Greatly appreciate any help - you guys are awesome and always seem to help me find a solution.
Thanks
Last edited by Scottiem303; 12-13-2018 at 11:13 AM. Reason: typo
12-14-2018, 07:39 PM
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.0
Best I can say is check all the wires between the PCM and the TCM and makes sure none of them are broken. You also might try to get a scan tool and see if you can communicate with the TCM directly.
12-14-2018, 10:22 PM
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