Hello! This is my first post so I apologise in advance if this has been discussed elsewhere but I couldn’t find much about the MAF sensor issue (!) – I think they’re the ones made by Bosch. Since the P0100 fault code and MAF sensor circuit malfunctions seem to be a common problem for other little K11 Micras, at least according to some sites, I think my forum searching skills might be at fault here – so again, my apologies if this is the case!
I have a Nissan Micra Vibe 1.0 K11 on a 02 plate (so I think it’s the K11C facelift) and have recently had a non-blinking engine management light come on. My U480 scanner has read the fault code as P0100, i.e. Mass Air Flow Circuit Malfunction. No other fault codes were detected. The car seems to be running fine at the moment aside from the light coming on, although when idling, it seems to judder just a little with a slight tapping noise, but I haven’t noticed any problems with the revs or a drop in speed and the car doesn’t stall or exhibit any problems with exhaust etc.
But I did notice one oddity a couple of days ago while driving along a dual carriageway: my fuel gauge was dropping more rapidly than usual (dropping from about two thirds full to a quarter full over a distance of about 6 miles at a speed of 65-70mph); but then when I next started the car and took it on a short trip, the petrol gauge had mysteriously gone back up to where I would estimate it should have been following the longer first trip, i.e. just over halfway. Very odd. But I have no idea if this petrol gauge incident is related to the MAF circuit fault picked up by the scanner and wondered if anyone could let me know if it sounds likely?
I haven’t taken the car out since identifying the fault code and wanted to seek some advice from people here who really know Micra K11s before doing anything or seeking a garage. I have learned that, according to the Haynes manual, a malfunctioning MAF sensor on a 02 K11 Micra could mean a full throttle body/MAF replacement (instead of just replacing the MAF sensor itself) that could end up being more expensive than crushing and replacing the car I love (unless I get a refurb or used unit). This seems extreme since the car isn’t exhibiting symptoms that the MAF sensor has completely failed (yet!). So I hope a replacement isn’t on the cards. I have found websites that explain how to clean the MAF sensor but not specifically for the post-2000 Micra K11 - so I don't know if this is an option.
The Haynes manual is very vague about post-2000 K11 MAF sensors and throttle bodies and only mentions how to check them and nothing about how to clean the MAF sensor or replace the throttle body/housing/MAF unit as a whole. It only mentions and illustrates how to remove a pre-2000 K11 MAF sensor and a throttle body seperately, which they say can't be done on the post-2000 K11. The pictures have left me none the wiser either as to where the throttle body and MAF sensor is located – can anyone tell me where to find it? Also, can the MAF sensor be cleaned on a 02 Micra 1.0 because the manual says nothing about this either?!! :doh:
Thanks for any advice in advance – sorry for the length of the post, but I wanted to be as thorough as I could!
:grinning:
I have a Nissan Micra Vibe 1.0 K11 on a 02 plate (so I think it’s the K11C facelift) and have recently had a non-blinking engine management light come on. My U480 scanner has read the fault code as P0100, i.e. Mass Air Flow Circuit Malfunction. No other fault codes were detected. The car seems to be running fine at the moment aside from the light coming on, although when idling, it seems to judder just a little with a slight tapping noise, but I haven’t noticed any problems with the revs or a drop in speed and the car doesn’t stall or exhibit any problems with exhaust etc.
But I did notice one oddity a couple of days ago while driving along a dual carriageway: my fuel gauge was dropping more rapidly than usual (dropping from about two thirds full to a quarter full over a distance of about 6 miles at a speed of 65-70mph); but then when I next started the car and took it on a short trip, the petrol gauge had mysteriously gone back up to where I would estimate it should have been following the longer first trip, i.e. just over halfway. Very odd. But I have no idea if this petrol gauge incident is related to the MAF circuit fault picked up by the scanner and wondered if anyone could let me know if it sounds likely?
I haven’t taken the car out since identifying the fault code and wanted to seek some advice from people here who really know Micra K11s before doing anything or seeking a garage. I have learned that, according to the Haynes manual, a malfunctioning MAF sensor on a 02 K11 Micra could mean a full throttle body/MAF replacement (instead of just replacing the MAF sensor itself) that could end up being more expensive than crushing and replacing the car I love (unless I get a refurb or used unit). This seems extreme since the car isn’t exhibiting symptoms that the MAF sensor has completely failed (yet!). So I hope a replacement isn’t on the cards. I have found websites that explain how to clean the MAF sensor but not specifically for the post-2000 Micra K11 - so I don't know if this is an option.
The Haynes manual is very vague about post-2000 K11 MAF sensors and throttle bodies and only mentions how to check them and nothing about how to clean the MAF sensor or replace the throttle body/housing/MAF unit as a whole. It only mentions and illustrates how to remove a pre-2000 K11 MAF sensor and a throttle body seperately, which they say can't be done on the post-2000 K11. The pictures have left me none the wiser either as to where the throttle body and MAF sensor is located – can anyone tell me where to find it? Also, can the MAF sensor be cleaned on a 02 Micra 1.0 because the manual says nothing about this either?!! :doh:
Thanks for any advice in advance – sorry for the length of the post, but I wanted to be as thorough as I could!
:grinning:
