Ive replaced the o2 but it keeps throwing code 41 (heater signal) I've tried 2 02 sensors, checked wires with test light and there gettin signal from the ecu. Dont really know what else to try besides maybe a different ecu. Any other help would be much appreciated.

 

did you reset the ECU after installing??

try switching the 2 wires that are the same color. some are black, some are white. just reverse those 2 and reset the ECU

 

Ya i reset the ecu everytime. I'll try switching the wires and see if that helps. thanks

 

if its the code 41 then your wiring is messed up somehow. If these o2 sensors are universal ones that you wired up yourself, then you better know how to solder because you absolutely HAVE TO solder your connections.

 

Its hardwired directly to the ecu, and i've checked and rechecked to make sure all the wires are right. i've used a bosch sensor and a oem honda. All conections are soldered

 

Interesting......... I say that because that is what it usually is; people making half-assed connections.

 

morning bump!!! tried another 02 last night, tried switching the 2 heater wires. Still throwing code 41. Any other ideas?
thanks

 

bump, cuz i got the same problem.

 

Check the fuses... ALL of them. Under hood and under the dash. It's unusual that both sensors would go bad at EXACTLY the same time... Don't be lazy... check 'em

 

i have checked all the fuses. and my car only has one 02 sensor, not 2.

 

BUmp!!!! still need some help!!!!!