As you may notice I am new to the forum with this thread. I would like to generally thank everyone who participates here, I have found answers to a lot of questions by searching the forums. I imagine there are are many others who find valuable information here yet do not sign up just to post a ...

To answer some of my own questions and hopefully help someone out in the future:

The pinout for the MAF connector is:
1: not used
2: battery voltage ~+12-14v
3: ground
4: +5v
5: signal

I checked resistance from pin 3 to one of the nearby chassis ground points and it was about 8 ohms which seemed ...

I am chasing a problem with a high MAF reading and would appreciate any ideas on how to diagnose.

2006 XC90 2.5t 210k miles

Previous owner had new Bosch MAF installed last year. I purchased a new Bosch MAF and get the same results, leading me to believe it is not a problem with the sensor.

Codes ...