P0134 Error Code

ares650 · Post by **ares650** » Sat Oct 16, 2004 5:33 pm

This past two weeks I have been getting the error code 'P0134 O2 Sensor CKT No Activite Bank1 Sensor1', every other day. I have stock exhaust, stock cat, greddy turbo kit, and the KPro. In the K-Manager software I do not have the CHECK on Disable P0134. What do you think is causing this CEL to come ON?

Post by **Hondata** » Sun Oct 17, 2004 12:39 pm

Do you have the OBDII functions disabled?

ares650 · Post by **ares650** » Sun Oct 17, 2004 4:58 pm

Hondata wrote:Do you have the OBDII functions disabled?

Yes I do, Would these matter?

Post by **Hondata** » Mon Oct 18, 2004 8:46 am

The ECU uses the secondary o2 sensor to monitor the promary o2 sensor. If you disable OBDII functions then after a certain number of driving cycles the ECU will decide the primary o2 sensor is bad.

So, don't disable the OBDII functions unless you need to, otherwise disable P0134 as well.

ares650 · Post by **ares650** » Mon Oct 18, 2004 8:53 am

Hondata wrote:The ECU uses the secondary o2 sensor to monitor the promary o2 sensor. If you disable OBDII functions then after a certain number of driving cycles the ECU will decide the primary o2 sensor is bad.

So, don't disable the OBDII functions unless you need to, otherwise disable P0134 as well.

So if I would uncheck the OBDII, then I shouldn't have anymore problems, right. When I put in my test pipe with 3in exhuast then I should disable the OBDII and P0134, right.

Great, Thank You.

Post by **Hondata** » Tue Oct 19, 2004 9:23 am

Correct. Good luck and have fun.

ares650 · Post by **ares650** » Mon Nov 01, 2004 7:01 am

Hondata wrote:The ECU uses the secondary o2 sensor to monitor the promary o2 sensor. If you disable OBDII functions then after a certain number of driving cycles the ECU will decide the primary o2 sensor is bad.

So, don't disable the OBDII functions unless you need to, otherwise disable P0134 as well.

I did as you said and the error has come back twice since my last post, what do you think of that?

Post by **Hondata** » Mon Nov 01, 2004 7:17 am

Do you have the secondary o2 hooked up? Do you have a cat?

ares650 · Post by **ares650** » Mon Nov 01, 2004 7:44 am

Hondata wrote:Do you have the secondary o2 hooked up? Do you have a cat?

From my frist post.....Yes, I do have the secondary O2 hooked up and the stock cat in the car.

Post by **Hondata** » Tue Nov 02, 2004 3:10 pm

I think you will need to look at why the P0134 error code is being generated as per the manual. Check A/F ratio while driving as check that the short term trim is not getting excessive. Otherwise I suspect that unplugging the 2nd o2 sensor will stop the P0134 error code occuring.