List Of Can Seafoam Cause Check Engine Light 2023. That’s because some parts under the hood like your o2 sensor or spark plugs may not be able to handle something like seafoam. Jump to latest follow 1413 views 16 replies 13 participants last post by mr2_mike , aug 4, 2004 t toymr1 discussion starter · jul 31, 2004 i used seafoam on my na 5sfe yesterday and today the check engine light is on.

The engine now idles smoother then when i bought it. Check to make sure your mechanic did not leave any air ducting loose our accident knock off a vacuum line. Web the seafoam may have damaged the exhaust oxygen sensor.





