P1153 code
Thread Starter
Melting Slicks
Joined: Feb 2007
Posts: 3,176
Likes: 10
From: New Smyrna Beach Florida
P1153 code
Am getting P1153 code Insufficient switching bank2 sensor1 (front O2 sensor) a few weeks after header and high flow cat install.
Anyone know what causes this? If so, how did you fix it? Looking for experience to come on in here. I'm sure other folks have had this happen. Thanks!
Anyone know what causes this? If so, how did you fix it? Looking for experience to come on in here. I'm sure other folks have had this happen. Thanks!
Le Mans Master
Joined: Feb 2000
Posts: 7,032
Likes: 2
From: Newburgh NY
From the service manual:
"The powertrain control module (PCM) monitors the heated oxygen sensor (HO2S) activity for 60 seconds. During this time , the PCM counts the number of times that the HO2S switches from rich to lean, and from lean to rich. When the PCM determines that the HO2S did not switch enough times, DTC P1133 or P1153 will set.
A lean to rich switch occurs when the HO2S voltage changes from less than 300 mV to more than 600 mV. A rich to lean switch occurs when the HO2S voltage changes from more than 600 mV to less than 300 mV. This diagnostic runs once per ignition cycle."
I've seen it a number of times. A computer tune should get you squared away. If not, it's possible it's a slow O2 sensor but I'd bet on the tune.
"The powertrain control module (PCM) monitors the heated oxygen sensor (HO2S) activity for 60 seconds. During this time , the PCM counts the number of times that the HO2S switches from rich to lean, and from lean to rich. When the PCM determines that the HO2S did not switch enough times, DTC P1133 or P1153 will set.
A lean to rich switch occurs when the HO2S voltage changes from less than 300 mV to more than 600 mV. A rich to lean switch occurs when the HO2S voltage changes from more than 600 mV to less than 300 mV. This diagnostic runs once per ignition cycle."
I've seen it a number of times. A computer tune should get you squared away. If not, it's possible it's a slow O2 sensor but I'd bet on the tune.
Drifting
Joined: Oct 2002
Posts: 1,335
Likes: 76
From: Bedford Va.
a tune would be my first step. if you had it tuned after the header install and all wiring is correct and not damaged they you can try modifying the o2 sensor.
I added small holes to the sensor shield for more access to the actual sensor-see pic
solved the slow response problem for me.
caution when drilling you can not hit the sensor.
this has worked for 1 & 1/2 years and still going strong.
I added small holes to the sensor shield for more access to the actual sensor-see pic
solved the slow response problem for me.
caution when drilling you can not hit the sensor.
this has worked for 1 & 1/2 years and still going strong.
Thread Starter
Melting Slicks
Joined: Feb 2007
Posts: 3,176
Likes: 10
From: New Smyrna Beach Florida
solved the slow response problem for me.
caution when drilling you can not hit the sensor.
this has worked for 1 & 1/2 years and still going strong.
caution when drilling you can not hit the sensor.
this has worked for 1 & 1/2 years and still going strong.
