2001 vitara, mil light not lighting up, p1510, p400, p440, codes present.

Question

2001 vitara 2.0.
mil light not lighting while three codes present. wire to mil light to pcm good can light light from connector. the p1510 code makes me wonder (ecm back up power supply) is the computer not getting all the power it needs?

Answer 1

P0400 Exhaust gas recirculation (EGR) flow malfunction

P0440 Evaporative emission control malfunction

P1510 ECM back up circuit voltage ower than expected

P1510 this is ECM learned value memory,even if you turn the key off the learned value is sill there, check the fuse for this which is in the engine fuse box. As for P0400 this is a real engine code where the function and passage of the EGR should be inspected P0440 this is more than likey has to do with the canister purge valve, the start is make sure the fuel cap is properly secure and not worn.