Missing vacuum line and SES light
#1
Missing vacuum line and SES light
I found this missing vacuum line or open line. Where does it go?? I’ve googled diagrams and can’t decider. Also, I have a p0138 bank 1 o2 sensor 2. With a mild miss at idle.
do I replace the sensor, or is it coil related or possible vacuum leak?
the photos uploaded upside down, but you can see the vacuum line that is open is clipped to the air box from the valve cover (my guess PCV)
do I replace the sensor, or is it coil related or possible vacuum leak?
the photos uploaded upside down, but you can see the vacuum line that is open is clipped to the air box from the valve cover (my guess PCV)
Last edited by 1999i30t; 12-21-2019 at 09:21 AM.
#7
should you still have the code after dealing with the fuse, you probably really do have a bad oxy senser.
Your fuel mileage and performance should increase once both upstream sensors have been replaced. It's worth the expense.
Last edited by JvG; 12-26-2019 at 03:04 PM.
#8
you might want to look for the oxygen sensor fuse in the fuse panel under the dashboard. Clean off any oxidation, or replace the fuse. I've had false positive oxy sensor codes. I replaced the indicated oxygen sensors on both sides, but till had codes. Until I cleaned the fuse.
should you still have the code after dealing with the fuse, you probably really do have a bad oxy senser.
Your fuel mileage and performance should increase once both upstream sensors have been replaced. It's worth the expense.
should you still have the code after dealing with the fuse, you probably really do have a bad oxy senser.
Your fuel mileage and performance should increase once both upstream sensors have been replaced. It's worth the expense.
#12
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4th Generation Maxima (1995-1999)
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07-16-2019 10:39 PM