AOA friends,
I am experiencing a weird issue with my Vitz 2009 model reg 2012 currently, 90K km on ODO.
My issues were low mileage within city 9-10km, 11-12km on M2 and a recent check light.
1- I got a check light 1 week back and I went to my electrician who after checking with scanner said that this is due to an Exhaust Oxygen sensor so replace it.
2- I went to mechanic and he suggested me to replace the exhaust manifold altogether with Oxygen sensor as my previous manifold did not have the CAT (filter) in it.
3- I went to Bilal Ganj and got a 2nd had Exhaust Manifold (after careful investigation of its cleanliness etc) with oxygen sensor and replaced it.
4- I filled my tank up top but suddenly after 30KM my first fuel bar fell down and check light comes again after running oddly 40KM.
5- I rushed back to the mechanic and when he saw the code again its following
P0401: Exhaust Gas Recirculation Flow Insufficient Detected.
6- My mechanic said this was due to faulty Manifold so go and replace it. I went to bilal ganj again and luckily the guy gave me another set of manifold and sensor and told me to come back to his electrician if issue happens again.
7- My mechanic replaced the manifold but again the same thing after few Km, however i experienced somewhat better mileage this time.
8- As per the person's instruction at Bilal Ganj, I went to his Electrician who said that this error code (P0401) is not for Oxygen sensor nor for Exhaust manifold, its something related to exhaust not flushing out from your silensor, He gave a full race to my car and we saw dusty smoke coming out of silensor. He asked me to either clean the silensor or give race to the car like this for a day or two, this check light will gone.
9- After first day experience, there was no checklight when i gave a full race 7-8 times but again today, I see the checklight again.
Please guide me what should be my next steps and if some body else also experienced P0401 error?
Thank you for bearing me for such a long story but I need to get out of this trouble.
I have attached an image for reference.
JazakaAllah