self-adaptation of mixture formation p0172

Question

self-adaption of mixture formation for enleanment at idle for then rigth cylinder bank is below the permissible limit. (p0172)
self-adaption of mixture formation for enleanment at idle for then left cylinder bank is below the permissible limit. (p0175)

how to solve this fault plz answer it sir....

Answer 1

The problem is there is too much fuel and not enough air.

start by trying to clean the Mass Air Flow (MAF) sensor with mass air flow sensor cleaner. 

 

Possible causes

- Faulty front heated oxygen sensor

- Ignition misfiring

- Faulty fuel injectors

- Exhaust gas leaks

- Incorrect fuel pressure

- Faulty Mass Air Flow (MAF) sensor