Hi guys, just want to know if anyone has come across an error code of 0307 which is the Closed Loop Control?

Thanks!

 

0307
Diagnostic Trouble Code 0307 points to a problem with the Engine Control Module Closed Loop Logic for the Left Bank. The left cylinder bank is also called the front bank. It is cylinders 2,4,6.

DTC 0307 is detected when the closed loop control function for the left bank does not operate even when the vehicle conditions meet the criteria (engine at normal operating temperature, etc.). Possible causes include ...
- Harness or connectors (The sensor circuit is open or shorted.)
- a defective Front Heated Oxygen Sensor sensing element.
- a defective Front Heated Oxygen Sensor heater.

 

Thanks very much for the reply, this helps a lot. Just one other thing I need to ask you about this. I had the Front Sensor, including all the wires replaced very recently, and now I would have to check them again. But my question would be is it correct to assume that the Front Heated O2 Sensor Left Bank is the one closest to the engine? Driver's side? And the Right Bank Sensor is at the Passenger's side near and before the cat? Again, thanks very much for the help.

gio

 

Here is a pic showing the location of the two front O2 sensors and which is considered RIGHT and LEFT.

http://www.courtesyparts.com/A32_O2-sensors.html