Should my Maxima 2000 be reprogrammed after the MAF replacement?

Question

i just called my technician this afternoon and he suggested only changing the MAF and air filter to fix my P0171 (system too lean) problem~~ cannot believe it!

he said that the o2 sensor might not be bad yet as the maf can be the ultimate cause to led the o2 sensors to give wrong readings~~

then i asked him if i need to bring the car to dealer for ECU reprogramming and he said no. it seems to him that 2001 maxima does need the ECU thing while my 2000 does not. i have been reading all of the threads in this forum realted to my problem and it seems to me that once the maf got changed the ECU is a must~~

so the question is: must the ECU be done after the MAF has been replaced for this 2000 maxima? well, the dealer told me that it cost "only" 95 bucks to do this--but in case the o2 sensor is bad as well but not changed this time when i did the reprogramming. in the future if i change the o2 sensor too, should i reprogram the ECU again b/c the o2 change? thanks!

Answer 1

The newest program for the car is always best. Nissan does not tell me what all they do when they bring out a ECM program change. But I can tell you this new MAF running the right fuel mixture and new program too. The car comes back to life and even spins the tires a little when shifting into second... Just like it should. P0420 and P0430 cat converter codes are next running lean will burn out the cat converter as well as the O2 sensors.