Audi A4 Problem Report
Audi A4 Check Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault
Catalytic converter is bad. :( must replace before next smog check. - Visitor
check engine light on - Visitor
Blinking engine light - diagnosis bad hoses, etc in need of immediate repair. - Visitor
Check water light came on. I checked water reservoir and it appears to have plenty. I know not...
Engine oil leaks are common from the valve cover gaskets and camshaft chain tensioner gasket.
A problem with the torque converter can cause the Check Engine Light to illuminate.
when the check eng light is on what do you do