Engine check light on

[Micra Champ]

Hello All! I have a 2000 model K11 1.0 coil pack Micra. The engine warning light is permanently on. I have changed the O2 and MAF sensors, but after erasing the computer error codes, it still goes on again after a short while. Any suggestions gratefully received!! Thanks!

 

[.Maarten]

What code? And did you change the maf for a bosch one or a aftermarket one?

 

[Micra Champ]

What code? And did you change the maf for a bosch one or a aftermarket one?

Thanks for your prompt reply Maarten! P0171, fuel mix too lean. If I do the dashboard test by pushing both odometer buttons, the code is 18. Unfortunately, the new MAF sensor is not a Bosch one. Could it be the throttle position sensor? Thanks!

 

[.Maarten]

I’d try a genuine known good Bosch maf from a scrapyard. I’ve tried atleast 5 aftermarket mafs and all had p0171