SES was on with p0102 and 0174/171. I cleared the codes. I just went outside and cleaned the MAF plug. It looked to be well connected. When should the freeze frame data be collected? At idle or when driving?No output from the MAF.
Do not jump on buying a replacement yet, might be a wiring or connector problem?
So do you have a SES/CEL/MIL on?
Freeze Frame data?
Pulled another screen after cleaning maf plug.I'm not getting good freeze frame data. Fuel system status show open loop insufficient engine temp, and rpms at 1341, both incorrect. rebooting the software has not helped. How about raw data?
Also, ses came back on with maf code again.
OBDWiz. Elmscan5 compact. Windows 8.1Do not think it is the software, but explain your computer and interface set up.
Also you need to understand how all of this works.
Best to look at the data with the engine running at all times. Put the computer in the car, drive it and if you look at the columns, there is a Min and Max value on either side of the current value. This is helpful
Freeze Frame data only shows once the CEL is triggered.
Is your MAF a 3 or 5 wire MAF?
You may need to check the Voltage and ground wires for the MAF, unusual is has no output. But the MAF could be bad, but do not jump to replace it yet.
Also configure the software to display measurements in Metric. The MAF reading at idle should be around 4-6 Grams/Sec.
Also confirm the engine coolant temperature using the Hidden OBC Menu. See the 4th link in my signature. You can compare between the software and directly from the car. The software is not likely the problem, but you could have an interface and/or computer issue?
Yest when the MAF is not putting out a signal, I recall the LTFT zero out and the STFT jump high negative.
You may have a number of issues, might even be the lower intake boot is so badly torn the MAF is not reading any air movement?
See the 1st link below in my signature.
I've got power going to the MAF. Bear with me, one probe inserted into the forward most terminal, the other probe grounded to the body, showed 17 + volts? The other two terminals showed 0 volts. I'm pretty decent with the nuts and bolts, but honestly the electrical testing has always been a challenge for me. The car had no change I running when the MAF was disconnected.