Anyone know what P0690 root problem would be?
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,356
Likes: 105
From: Mesa AZ
Anyone know what P0690 root problem would be?
Just got into my car for lunch and check engine light comes on with P0690 "ECM/PCM Power Relay Sense Circuit High". I guess it must think the voltage is to high coming into the PCM. Anyone have this or know what the heck could be wrong?
EDIT:
GM's text for this error is "Engine Controls Ignition Relay Feedback Circuit High Voltage ECM"
__________________
EDIT:
GM's text for this error is "Engine Controls Ignition Relay Feedback Circuit High Voltage ECM"
__________________
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,356
Likes: 105
From: Mesa AZ
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,356
Likes: 105
From: Mesa AZ
Another update:
Pulled my jumper (this has been installed for several weeks) out of the "Emmissions EVAP" fuse for running my tranny cooler fan and the problem went away for 3 straight starts. Will keep my eye on it.
Pulled my jumper (this has been installed for several weeks) out of the "Emmissions EVAP" fuse for running my tranny cooler fan and the problem went away for 3 straight starts. Will keep my eye on it.
