The dreaded check engine light!

[dan filipi]

Now I'm confused.

The light came on again but this time it's sensor 2, same side where before it was sensor 1 :headscratch:

Could it be 2 O2 sensors are failing?

Anything's possible, many things not likely?????
Are you sure it was the other one last time and a different one this time? Too many things called "02 sensor" can get a little confusing.

Wish I was there. :head bang:

Yes, first read was b2s1, this time b2s2.

The first time was using a basic reader, today's read was using one of the pro readers.
Could it be the first read was in error?
Is that possible?

 

[AApple]

- DTC P0059 for HO2S bank 2 sensor 1
- DTC P0060 for HO2S bank 2 sensor 2

So...what specific code do it have NOW? :headscratch:
These codes are specifically for the HEATER part of the sensor...the part that heats it up quickly so the PCM will go into closed loop sooner, and start controlling the timing/fuel etc. It could be a bad connection on both sensors, but it's entirely possible that both are just far enough out of whack(hi-tech term) to set intermittent codes, but not be a hard failure.

 

[dan filipi]

- DTC P0059 for HO2S bank 2 sensor 1
- DTC P0060 for HO2S bank 2 sensor 2

So...what specific code do it have NOW? :headscratch:

Oh ya know, code says

Fault code 1: P0059
Description:
Oxygen Sensor heater resistance bank2 Sensor 2
Status:
Faulty wiring and connections. Faulty oxygen sensor.

Now I'm even more confused

 

[dan filipi]

Talked to Joel on the phone,
evidently the error code description of the printout is wrong since 2 references Joel has say P0059 is sensor 1 so that's the one I'll replace.

Sensor 1 is ahead of Cat, right? The manifold side?

 

[mcgovern61]

far enough out of whack(hi-tech term)

:smilie_happy: I love it!

 

[cooltech]

Yes Dan ahead of cat you will need a o2 socket or a 7/8 wrench

 

[AApple]

Also, a new sensor should come with a bag/tube of anti-seize...make sure you USE it. Some sensors have it already on the threads, some have it in a separate bag/tube....either way, it helps the threads make a good contact with the pipe. :builder:

 

[dan filipi]

Got it. :thanks:

I'll change it probably this weekend.

 

[AApple]

One other hot tip....when you get the new sensor, check the wiring colors & the connector against your original. Some sensors are not wired correctly, and some have the wrong connectors for the vehicle, even tho the parts guys will always tell ya "It's the only part number that comes up"....

 

[dan filipi]

Ok I'm home and going to change this thing out when it cools off.

Do I need to reset anything once it's in?
Check engine light is off right now.

 

[AApple]

You should not have to do anything. Once the new sensor is in, and the PCM sees that it is operating correctly, it will clear the code from memory.
Those sensors can be a MAJOR pita to get out, so go slowly, and carefully. Soak it with some WD40(or whatever you use), and make sure you have the correct O2 sensor socket, or a dang good wrench....work it back/forth a little at a time.
Good luck! :builder:

 

[dan filipi]

DONE!

The old one took the wrench just to start it then it unscrewed by hand, Nice!

:thanks: for all the help guys.

 

[AApple]

You lucky bastige!!! :cheeky:
:smilie_happy: :good:

 

[Steve83]

Gotta love these snow-free, salt-free SoCal roads! Not much rust or corrosion to deal with.

 

[dan filipi]

Gotta love these snow-free, salt-free SoCal roads! Not much rust or corrosion to deal with.

Yeah, I didn't even use a penetrant spray.

 

[cooltech]

cool It would not hurt too clear the code so it isnot in history