P0156

[SVT3391]

Today is the first time I drove the car out for work after the MSDS headers were done. I also got a pair of MILs from Naulitus. I got the P0156 code on my way back. The weather was great with no humidity.

I searched. From Tony's post:

To expound on what Ray posted and to answer your question a little more in depth, if the lower O2 sensor(s) goes bad, you get [FONT=arial,verdana,helvetica,sans-serif]P0156 [/FONT][FONT=arial,verdana,helvetica,sans-serif]Downstream Heated Oxygen Sensor circuit fault - Bank No. 2. or [/FONT][FONT=arial,verdana,helvetica,sans-serif]P0161 [/FONT](no signal sensor code). I got both these codes. The mileliminators are only there to eliminate the P0420 and P0430 codes for the lower O2 sensors.

Correct. I just used some last week for my battery positive cable. If I decide to redo the mileliminators again, I will use the Liquid Electrical Tape (aka liquid rubber) for the connections. Right now, whenever I drive in the pouring rain for 4 or 5 hours, I get the P0136. However, I just erase the code and it doesn't come back until the next 4-5 hour drive in the pouring rain again.

Before the header/MIL installation, I had P0420 sometimes but not very often. Does this P0156 means my Bank 2, sensor 2 is broken? Or just a bad connection? Again, there is no rain, water puddle or anything like that today.

 

[projectSHO89]

I would suspect in the following order: Bad/faulty connection, incorrect connection, or a faulty sensor.

Steve

 

[Tony2005]

Does this P0156 means my Bank 2, sensor 2 is broken? Or just a bad connection? Again, there is no rain, water puddle or anything like that today.

I would suspect the mileiminator was not installed correctly (connectors came out) or the O2 sensor has a broken electrical connection. Check the mileliminator connectors again.