PO 1133 Code
There is no switch.
The codes 1133 and 1153 are insufficient switching codes, that means the O2's are switching too slow.
Can be common on cars with LT headers, or a sign of failing O2's.
Can also be a sign of other things too. Once one of these is set, it's stuck in open loop.
What you need to do is disable the codes. Set to no report with HP Tuners.
Check switching at higher rpm, if it swiches ok above 1700 rpm the O2's may be ok. and disabling the codes might be the cure.
The codes 1133 and 1153 are insufficient switching codes, that means the O2's are switching too slow.
Can be common on cars with LT headers, or a sign of failing O2's.
Can also be a sign of other things too. Once one of these is set, it's stuck in open loop.
What you need to do is disable the codes. Set to no report with HP Tuners.
Check switching at higher rpm, if it swiches ok above 1700 rpm the O2's may be ok. and disabling the codes might be the cure.
Thread Starter
TECH Fanatic
Joined: Jul 2008
Posts: 1,483
Likes: 3
There is no switch.
The codes 1133 and 1153 are insufficient switching codes, that means the O2's are switching too slow.
Can be common on cars with LT headers, or a sign of failing O2's.
Can also be a sign of other things too. Once one of these is set, it's stuck in open loop.
What you need to do is disable the codes. Set to no report with HP Tuners.
Check switching at higher rpm, if it swiches ok above 1700 rpm the O2's may be ok. and disabling the codes might be the cure.
The codes 1133 and 1153 are insufficient switching codes, that means the O2's are switching too slow.
Can be common on cars with LT headers, or a sign of failing O2's.
Can also be a sign of other things too. Once one of these is set, it's stuck in open loop.
What you need to do is disable the codes. Set to no report with HP Tuners.
Check switching at higher rpm, if it swiches ok above 1700 rpm the O2's may be ok. and disabling the codes might be the cure.
Thread Starter
TECH Fanatic
Joined: Jul 2008
Posts: 1,483
Likes: 3
o ok, i gotta get another 02 then, any decent brands and how much? how do u get it out?
I don't like to replace parts without a proper diagnosis, is that 23k miles?
The stock sensors should last longer than that.
But if you want to change them anyway, I recommend OEM GM from the dealer, I've had good luck with Denso's from autozone too. I've had bad luck with Bosch.
Since you have headers tell them you need front O2 sensors, one on each side.
When you get under the car and look at the header collector, where the four pipes join, theres where you'll find them. A 7/8 open end wrench is all you need.
The stock sensors should last longer than that.
But if you want to change them anyway, I recommend OEM GM from the dealer, I've had good luck with Denso's from autozone too. I've had bad luck with Bosch.
Since you have headers tell them you need front O2 sensors, one on each side.
When you get under the car and look at the header collector, where the four pipes join, theres where you'll find them. A 7/8 open end wrench is all you need.
Thread Starter
TECH Fanatic
Joined: Jul 2008
Posts: 1,483
Likes: 3
I don't like to replace parts without a proper diagnosis, is that 23k miles?
The stock sensors should last longer than that.
But if you want to change them anyway, I recommend OEM GM from the dealer, I've had good luck with Denso's from autozone too. I've had bad luck with Bosch.
Since you have headers tell them you need front O2 sensors, one on each side.
When you get under the car and look at the header collector, where the four pipes join, theres where you'll find them. A 7/8 open end wrench is all you need.
The stock sensors should last longer than that.
But if you want to change them anyway, I recommend OEM GM from the dealer, I've had good luck with Denso's from autozone too. I've had bad luck with Bosch.
Since you have headers tell them you need front O2 sensors, one on each side.
When you get under the car and look at the header collector, where the four pipes join, theres where you'll find them. A 7/8 open end wrench is all you need.
cool, i just need one for the drivers side its saying, but yea i prob will go with a denso, how much are they?
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There is a harness that the O2 sensor plugs into. On the drivers side the harness is up on the side of the engine block. Just lift up the little latch and pull the plug apart. Thread new sensor in and plug it into the harness. Zip tie the wire up off the exhaust if its too long and you are good to go.
Thread Starter
TECH Fanatic
Joined: Jul 2008
Posts: 1,483
Likes: 3
There is a harness that the O2 sensor plugs into. On the drivers side the harness is up on the side of the engine block. Just lift up the little latch and pull the plug apart. Thread new sensor in and plug it into the harness. Zip tie the wire up off the exhaust if its too long and you are good to go.
