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P0155 code, change o2 sensor engine ligh still on

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Old 11-05-07, 04:46 PM   #1
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Default P0155 code, change o2 sensor engine ligh still on

can somebody tell me what's wrong with my car , I got a code P0155 for the bank 2 sensor 1 heater problem , I got a brand new sensor already and install it to the bank 2 sensor 1. I mismatch the signal wire to ground ..then I switch it back, i"m not sure if that affect anything?

Out of the 4 wires, 2 of them goes in to the ECU , one is the 0-1v signal wire..what's the other one for? Heater 12v ? heater Ground? does it sense current or Voltage? because I want to see what's wrong with it... because it's a new sensor..what could go wrong?
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Old 12-07-12, 06:08 AM   #2
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Changed mine with an oem sensor still popped up someone help please
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