I had the trouble code P0136 come up tonight. Went to do some research and came back with this sensor Motorcraft DY1093. Just wanted to make sure that was the right sensor before i ordered it. Also where would that one be located. Ive read the one on the drivers side behind the cats. Thanks.

 

After the cat, bank one (drivers side).

Can't help much beyond that because we don't know what we're working on here.

 

2003 f150 5.4 4x4.

 

Your part number is correct then....

 

Sorry to revive an old thread. I replaced the O2 sensor when i posted this thread. Now today i got the same PO136 code again. What could be causing this to come back on?

 

Dirt. Try cleaning the connector out real good.

 

Would this work? http://www.autozone.com/miscellaneou...ner/128435_0_0

 

Yes. It is also quite a bit cheaper at Walmart.

 

Yea, use it to assist. The O2 connectors can be finicky, like say if at some point it was open to dust and dirt (I've noticed with O2's in the past more then anything), which attaches to the old factory dielectric like fly paper. 136 is a circuit fault DTC is it not ? Think so,-

P0136 Downstream heated O2 sensor fault (Bank 1) - This is the passenger side O2 back by the trans.

Well that could be the circuit anyway. CRC leaves a residue regardless of what they advertise, -use it anyway but also clean the connector blades with alcohol/Q-tip. The female connector the same way, hopefully you have some sort of air compressor with a blow gun. That helps tremendously.