Hi, thank you for the reply. Reason why I ask is I have the engine management light on. I ran the ODB scanner which initially indicated code for faulty 02 sensor. I changed the sensor and cleared the faulty code. After week after driving the EML came on again. I ran the scanner and code P0133 was indicated.
I have read it can be various faults so I am starting with the MAFF. I am going to give it clean. If not clear code look at exhaust. See attached photos.