Incredible 2004 Volvo Xc90 Check Engine Light Flashing 2023. A check engine light can indicate a broad spectrum of problems with your 2004 volvo xc90. Web while driving, the computer of your xc90 (ecu o pcm) monitors air/fuel supply and exhaust gases in order to verify that the engine is working properly.

So, i'm searching for a new place. This blinking light consistently indicates a draconian engine misfire allowing unburned fuel to be dumped into the exhaust system. So when i turn my key to position ii without the engine running the check engine light will stay on for a few seconds and then flash 7 times and stay off.