CEL code interpretations….
06-13-2022, 05:54 PM
#1
Senior Member
Thread Starter
CEL code interpretations….
Hi guys
got a few codes
1- misfire on 5-6-7-8
2-sec air valve stuck open bank 1
3-MAF back one
car runs fine
how does the computer know what air valve is stuck if they both controlled by the same vacuum ?
thanks
got a few codes
1- misfire on 5-6-7-8
2-sec air valve stuck open bank 1
3-MAF back one
car runs fine
how does the computer know what air valve is stuck if they both controlled by the same vacuum ?
thanks
06-14-2022, 06:17 AM
#2
Super Member
Join Date: Dec 2009
Location: Dhahran, KSA
Posts: 747
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73 Posts
2020 E 300 Coupe and 2019 GLS 400
Hello,
I believe through the o2 sensors and the periodic testing function of the SAI pump. The pump runs for a few seconds during operating temperature and the feedback from the o2 sensors is used to diagnose if a valve is stuck.
I believe through the o2 sensors and the periodic testing function of the SAI pump. The pump runs for a few seconds during operating temperature and the feedback from the o2 sensors is used to diagnose if a valve is stuck.
