O2 Sensors and code P1126/P1127
06-25-2005, 03:03 PM
#1
Burning Brakes
Thread Starter
O2 Sensors and code P1126/P1127
I did a search on the two codes P1126 and P1127 and only came up with one thread, so I thought i'd post my experiences.
These two codes had been popping up so I did some online referencing and found out they read "O2 Sensor, Range 2, Bank 1-3" for P1126 and "O2 Sensor, Range 2, Bank 4-6" for P1127. Basically, both O2 sensors aft of the cats.
Prior to this, my car had been suffering poor gas mileage and decreased driveability (roughness/idle surges at very low speeds in 1st gear, unusual bogging, etc).
I'm happy to report that immediately after the O2 change, the poor drivability is gone. Bogging is gone and the car is once again smooth. I'll report back in a few days about the gas mileage thing. I was getting about 15 mpg all city driving and about 21 mpg highway. We'll see if it improves.
That is all.
These two codes had been popping up so I did some online referencing and found out they read "O2 Sensor, Range 2, Bank 1-3" for P1126 and "O2 Sensor, Range 2, Bank 4-6" for P1127. Basically, both O2 sensors aft of the cats.
Prior to this, my car had been suffering poor gas mileage and decreased driveability (roughness/idle surges at very low speeds in 1st gear, unusual bogging, etc).
I'm happy to report that immediately after the O2 change, the poor drivability is gone. Bogging is gone and the car is once again smooth. I'll report back in a few days about the gas mileage thing. I was getting about 15 mpg all city driving and about 21 mpg highway. We'll see if it improves.
That is all.
04-14-2007, 07:52 PM
#2
Addict
Rennlist Member
Rennlist Member
Please report back. I just got the CEL today and when I ran the codes, P1126 came up. Does this mean I need to replace both post-cat O2 sensors and then clear my codes? Car drives fine and gas mileage has been fine too.
