P0158 O2 sensor error code

[Mark G.]

My 2004 Wrangler Sahara, automatic, 4.0L threw a P0158 code today:

P0158

2/2 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

1. Should I replace this sensor? 2. Where is this sensor located? 3. Does anyone have the part # for this sensor?

Thanks for any help you can give.

PS I apologize if this was posted somewhere else.

 

[Chris]

My 2004 Wrangler Sahara, automatic, 4.0L threw a P0158 code today:

P0158

2/2 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

1. Should I replace this sensor? 2. Where is this sensor located? 3. Does anyone have the part # for this sensor?

Thanks for any help you can give.

PS I apologize if this was posted somewhere else.

Replace the bank 2, sensor 2 oxygen sensor with NGK #23531.

It's absolutely imperative that you use a NGK replacement sensor. For more information on why that is, see this thread:

https://wranglertjforum.com/threads/the-official-jeep-wrangler-tj-oxygen-o2-sensor-thread.4068/
I would also highly recommend replacing the other 3 sensors while you're in there as well. They are cheap, and chances are if this one went bad, the others aren't far behind.

O2 sensors are regular maintenance items that should be replaced every 80k miles or so.

 

[Mark G.]

Much appreciated...thank you!!