ok i have stage 1+ and am getting a P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2). and can't figure out how to get it gone. nothing is visibly wrong with the rear o2 sensor and nothing is loose. thanks in advance hermanos.

 

You been running race gas bro? Are you doing those track sessions catless?

 

no race gas only 93oct. i'm afraid to do track on these continental tires they hardly stick at 35mph on city streets.

 

<<<bump>>> still need help

 

Is it a hard code.. Meaning, does the CEL stay illuminated continually until you reset the ECU? I'd pull the back O2 and try to swap with another Evo guy. Testing the sensor itself is the first logical course of action. Let us know what happens.

 

yes it stays illuminated continually until i reset the ecu. that is a good idea any dallas area evo guys wanna help a brother out joeycoates? yevoviii?

 

If they can't help, hit the South regional forum. It should only take a couple of minutes to swap test your back O2.

 

check the wires to the O2 sensor.....i had that same code after installing my test pipe (i had to extend O2 to reach the new bung.) One of the ground wires hadn't been soldered together well enough and it came apart while driving. Quick reattatchment, and no code since. If it isn't that, i'm not sure.

 

Hey guys i am getting this code too anything i can do to fix it?

 

if you've never cut and soldered the o2 wires your rear o2 is fried i had to replace mine. i also replaced my cat, since the o2 got gunked. you can try cleaning your 02 sensor. i tried and was unsuccessful. good luch bro.

vincent

 

Hey do you buy any chance know what size of nut/bolts the stock car uses?

 

why bother with all that, when it should be cover under warranty, unless

you went over the mileage already or car is highly modified.

 

I think stage 1+ qualifies as highly modified

l8r)