Jhwhite05
Member
- Joined
- Sep 17, 2021
- Posts
- 42
- Reaction score
- 75
Occasionally upon starting my 2009 Yukon Xl, 1500 4x4 5.3 I get a check engine light. Code P0690 “Engine Controls Ignition Relay Feedback Circuit High Voltage”
Everything seems to be operating normally and sometimes the check engine light goes off on its own without me clearing it after a couple days.
Any ideas for how to diagnose an issue like this?
Everything seems to be operating normally and sometimes the check engine light goes off on its own without me clearing it after a couple days.
Any ideas for how to diagnose an issue like this?
