99 ML320 Code PO100
 

Reads MAF or VAF A Circuit Malfunction. Replaced MAF about 1 month ago with Genuine Bosch. No issues until now. What does this code mean?

Thanks for the input!:cry:

P0100
MAF circuit trouble
Hot film MAF sensor B2/5

did you replace the air filter at the same time? was it a complete maf or just the sensor?

Complete unit was replaced. Did not replace filter at that time but filter is new.

theck wiring at the plug where it connects to the maf, i have seen some damaged, also good possibility your maf may be defectice ot there is a vacuum leak.

Code Po110?
 

I replaced the gaskets at the MAF and where intake meets manifild in case of air leak. Now have a PO110 (IAT Sensor Circuit Malfunction) what could it be? This is driving me crazy!

Defective new part..

clean the throttle blade i have had few 112 engines have this problem, if it still acts up replace the throttle acuator

1999 ML320 MAF issue
 

I also had a po100 code on mi ML 320. The car would buck at speed and shut off while in idle.

This is after I cleaned the MAF with the CRC Spray....

Before the cleaning the code was po170 fuel trim bank 1

I have just disconnected the MAF wires, and it it working better. Is it the MAF of the connector?

I'll take all the help I can get before going to the dealer......( temporarily unemployed, no $$$).

Thanks!!!!!!!!!!!