The other day the CEL came on, had the code read, #2 bank reading lean. Now, is it the O2 monitors, O2 Sensors or the MAF. I reset the caode and drove for several days without a problem, we even monitored the operation of the sensors with a EKG-like machine. They fluctuated between 0.02 volts to .89 volts at times. Both had periodic flat lines.
Now the delema.. what do I replace? I reset the codes and drove for several days and it came back on. When the CEL comes on it STAYS on until I reset it. Car drives fine, temps are low, etc...
Any direction would be greatly appreciated! With X-Mas coming I don't want to be chacing this with dollar bills in hand.
