Oxygen Sensor Replacement Help - P0135 Fault Code
Good Morning all,
I just bought at 2003 A4 1.8T and after about 200 miles i got a CEL and after scanning it iwth an Global OBDII I got a fault code:
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
Now.. the questions I have regarding this are :
Do I really need to replace my O2 sensor?
If yes... How can I determine it's location in the engine?
Also, Is this a job I can do myself? Is there a reference I can find the location of it in the engine somehow and possibly some instructions as to what steps I need to take to replace it.
Any Help would be appreciated.