About 3 months ago I got these codes pop up and cleared them to see if they came back, about 2 weeks later they came back on and I decided to clean the MAF sensor to see if it made a difference. Again, stayed off for about 2 weeks and came back on. Now if I clear the code it basically comes on within 5 minutes of driving.
Although, if I clear the code in the morning, then drive 25 minutes to work it wont come on. It's always 5 minutes into my journey home, I guess this is probably to do with an over night cold start in the morning so the car is running richer to warm up? So the system isn't running as lean as the sensor seems to detect (I do warm the engine for a few minutes before driving too).
What would you suggest the next step would be? Is it worth changing the MAF sensor all together or just put it into a garage to see if its something else?
Also to be noted, I fitted a fresh air filter when I cleaned the MAF sensor so I know that it isn't dirty or restricting airflow etc
Thanks guys