My check engine light came on in my blazer the other day and i hooked up a scan tool to it and it came back with p0452 which "is the voltage signal from the evaporative emissions control sensor is too low for the current operating conditions" I tightened the gas cap and restarted the engine, and hte light went off two days later it came back on. What is the most probable cause for this....By the way we replaced the fuel pump about a monthe and a half ago and a few weeks later it would crank but not start...we checked fuel pressure, replaced fuel filter and teasted, then reconnected wires...havents had a problem since...could this be related?
Aug 4, 2008 at 7:54 AM