New O2 sensor bad???

[Sonora70]

Finally got all my O2 sensors replaced. I used the ntk sensors. Im still getting a P0133 code. Is it possible that the sensor is bad? I ordered them from rockauto.com. I can't return because I purchased them over 60 days ago even though I just opened the shipped box last week.

Im getting the P0133 and the P0430 code at the same time. Thanks for advice.

 

[BLACKJKU]

Have you done a battery reset for the ECM?

 

[Sonora70]

Have you done a battery reset for the ECM?

I cleared the codes with my code reader? Would that be the same?

 

[BLACKJKU]

I cleared the codes with my code reader? Would that be the same?

NO

How to Reset the ECU on a Jeep Wrangler JK

While there are folks that swear resetting your ECU does absolutely nothing, it's a common practice among automotive enthusiasts. The ECU (Electronic Control Module) "learns" your driving style and the parts in your ride by storing information in its memory, information that it gathers using a...

wranglerjkforum.net

 

[Sonora70]

NO

How to Reset the ECU on a Jeep Wrangler JK

While there are folks that swear resetting your ECU does absolutely nothing, it's a common practice among automotive enthusiasts. The ECU (Electronic Control Module) "learns" your driving style and the parts in your ride by storing information in its memory, information that it gathers using a...

wranglerjkforum.net

I'll do it. thanks!

 

[pcoplin]

If you have access to a scanner, you can watch the 02s live. ALso your fuel trims. Torque app with an OBD2 dongle works well for this at not a high cost.

 

[Sonora70]

Reset the ECU as described and the check engine light came back on. P0133 code. Can the new sensor be bad? thanks.

 

[BLACKJKU]

Reset the ECU as described and the check engine light came back on. P0133 code. Can the new sensor be bad? thanks.

According to this it could be a dirty Mass Flow, bad wiring, exhaust leak, vacuum leak.

Did you use a NTK O2 sensor?

 

[Sonora70]

Yes, I used a NTK sensor. It’s strange, it comes on sporadically.

 

[BLACKJKU]

Yes, I used a NTK sensor. It’s strange, it comes on sporadically.

Then i'd check the wiring over close for a worn place on the outside or maybe a bad connection at the connector.

 

[Sonora70]

Then i'd check the wiring over close for a worn place on the outside or maybe a bad connection at the connector.

. Will do. Thanks.

 

[MacGuyver]

. Will do. Thanks.

What year is the jeep? The 3.6 engine is vastly different than the older 3.8 in regards to electrical stuff... and many other things.

 

[Sonora70]

2009