i dont see how its possible,but my car NOW shows a code 33 AND 34 at the same time!! after all i have been thru with this car ,THIS is downright hilarious! i mean how is that even possible? since they are the codes for both low signal voltage and high at the same time! car runs and drives ,but it is running OMFG rich. and mpgs are around15 down from 20.now im asking ,when the ECM goes away ,it sets a code for that,right? could the ECM be bad with no overt symptoms?

 

IF the maf is unplugged it should throw both these codes. Also if it is bad. Mayhaps look at the wiring or replace it. The relay I suppose could also be bad preventing the signals from reaching the ECM. I have those codes set often as when I am tinkering I forget to plug the MAF back in. The way to think about it is if there is no signal its resistance is infinite so both max high and max low. Undefined in other words.