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Engine check ON, Check VSC in the display
I connected to OBD scanner and below are the errors
P101 MAF circuit range/performance
P0172, P0175, system too rich
P2241 O2 sensor pumping current low
i cleaned the MAF sensor and yet the issue wouldn’t go. Please suggest possible fix. I had the issue but went off in a couple of hours now it returned and won’t go.
I used a generic electronic component cleaner. Not a MAF specific one.
When you cleaned the MAF. Did you notice the condition of the wires? Shiny, or were they covered in crud.
Reset the ecu, and post the short trims along with long term fuel trims. Rest it via fuse method, and not the scan tool. Once reset and scan tool plugged in monitor the STFT and LTFT. The long fuel trims should be at 0. Another while idling what does the MAF g/s state? Look at this reading while the rpm' s have stabilized.
How old is your engine air filter? By the readings of your data. It's affecting both banks equally. The only time I've seem this was with a water saturated air filter. I used to run the lower Fsport air box. For some reason in heavy down pours and stationary. It would soak the air filter go figure never while moving.
When you cleaned the MAF. Did you notice the condition of the wires? Shiny, or were they covered in crud.
Reset the ecu, and post the short trims along with long term fuel trims. Rest it via fuse method, and not the scan tool. Once reset and scan tool plugged in monitor the STFT and LTFT. The long fuel trims should be at 0. Another while idling what does the MAF g/s state? Look at this reading while the rpm' s have stabilized.
How old is your engine air filter? By the readings of your data. It's affecting both banks equally. The only time I've seem this was with a water saturated air filter. I used to run the lower Fsport air box. For some reason in heavy down pours and stationary. It would soak the air filter go figure never while moving.
No CRUDS on any of the wires. My engine air filter is very new. I did the ECU reset and the check engine along with Check VSC went away. Below are the values(please let me know if it would come again).
Before turning on the engine MAF 0.43gm/s STFT,LTFT 0 , AF Oxygen 0.997 times bank1 sensor 1.
After turning ON the engine RPM 646, MAF 2.9, STFT (bank1sensor1) -4, STFT(bank1s2) -4.7, Both LTFT at 0
AF O2 (bank1 sensor1) 1.015 times, AF O2 (bank 2 sensor 1) 1.022 times, AFS Voltages 3.38V and 3.41V.
Thank you so much for the help. Will post an update if the issue repeats.
Check VSC Error
