I did the full relearn procedure and this weekend it did it again Killing me! Im thinking maybe I just need to pull the battery terminal off for a while and then try again, I think that relearns the ECU too. I did, I got the exact same one as you did from Rock auto. About to call uncle and bring it to my service guy ( not Infiniti but really good ) and let him have a go at it. I did the full Monty relearn but it came back on after 150 miles. OH and I did jinx it because the SES (Service Engine Soon) light came on at 650 miles. I did not do the relearn process, do you think thats my issue? I have resigned to just clearing it once in a while but its a PITA as it has left me on the side of the road several times in bad places.ĭid you by Infiniti MAF senor or so called OEM parts? I am thinking I should have spent the +400 for the two Infiniti parts and not the RockAuto ones even though they appear to be the same ones I had that 'failed'. When it came in I replaced it and not a week later it happened again. Cleared the codes to get home and it ran great for the week it took for my new MAF to come in. NO CEL! read the codes and cleared them and it was MAF B out of spec. one day my car started bucking and wouldnt go above 2500 rpm. Mxquattro wrote:This is something similar to my G37Xs (2009). Could not doing the Universal Trip Pattern Drive Pattern to clear the permanent codes cause the codes to reappear even if the problem is corrected? I have cleared the codes with my scanner / gas pedal stomp / and battery off but I notice I have both codes are now listed as permanent. Put them in as well as new Fram air filter ( Purolator ones I had before appear really cheaply made but worked ) Cleared the codes with 3 hour off battery and everything seems good ( more power ) except 350 miles later light came on and same codes are back. I broke down an purchase to new sensors from RockAuto which were ' HITACHI MAF0031 Sensor Only Actual OE Part ' for only $84 each ( cheap compare to +200 each from infiniti ). AT around 90K it came back but air filter change didn't clear it and I tried using MAF sensor cleaner on both sensors and I must have damaged the other because I got the P0101 and P0101B(i.e both sensors) I can reset but the light comes on anywhere from 1 mile to 600 miles after reset. My G25x started throwing P0101 code (bad MAFS) at around 60K miles but turned out it was a dirty air filter. Sorry for the long post but the devil is in the details.

G37 mass air flow sensor problems