Hey guys, you really helped me out on my first issue with my rig so I am going to give the second one a try as well. Today the service engine light came on. I am really trying to get proficient in taking care of all my own stuff.... so I went down to the local auto parts store and picked up the latest and greatest scan tool. I plugged her in when I got home and pulled off the following:

Code P0154
O2 Circuit
No Activity Detected
Bank 2, Sensor 1

Given this information, it is my assumption that my O2 sensor needs replaced.

Thoughts? Thanks for your help in advance.

 

I had the same code and my o2 sensor had come unplugged. Chase it down, maybe the wire is damaged.

 

How many miles on the truck, how is it driving?
Mike

 

81,000 on the ticker. Driving and running totally fine. According to my free service DVD from Atlantic British (I have not received my actual service manual yet from them)I see that there are two 02 sensors for this unit. I am assuming they are in the manifold and will take a look tomorrow. Most likely I will replace both and see how it goes. Local parts store has them for $60.00 each.

Any thoughts are welcome.

DM

 

Actually there are 4 that will need to be replaced. Rondo makes a good point, may want to check all the connections just to make sure.
Mike

 

If I am not mistaken, that is for the right front o2 sensor. I was under the truck the other day after a hard rain, and noticed the wires for this sensor were laying on top of the right cat. I had to tie it back up. Check the wires for separation/condition too.

 

You guys were all correct. It was simply the connection. Pulled them apart, blew them out, put them back together and problem solved. I believe it was the passengers side front 02 sensor.

Thanks again you guys. This week I am tackling a complete brake job. I might be back with more questions once I get everything torn down.

 

Be sure to open the bleeder valve before compressing the brake piston!

 

I didn't when I changed my brakes and no problems... Why would you need to do this?

 

so all of the junk that accumulates in the piston isn't shoved back up the line. Good idea to flush the lines at this point anyway...