OBD1 Reader

[imtb]

Just got this in and I do not have CEL hooked up, I am super stoked, to able to see any codes. I have 92 ej22 in my VW Synco.



Oxy Code

[Legacy777]

Do you have the oxygen sensor hooked up? If you do, I would check the wiring from the oxygen sensor to the ECU.

Try clearing the codes and see if the O2 sensor comes back.

[imtb]

O2 is hooked up, but I didnt try clearing the codes. I oreded a new one since this one is pretty gummed up.

I gues the ecu just runs in defualt mode since O2 not working? Maybe this is why plugs so clean.

[Legacy777]

The O2 sensor is responsible for closed loop running and affects fuel trims which can increase power and/or improve fuel economy over time, depending on how you drive fuel type/quality, etc.

If the O2 sensor isn't work, the ECU stays in open loop mode and performs fueling via the fuel tables.

[imtb]

Should I have the green connectors and the black connectors together when i use thiis?

I

[mike-tracy]

I used different software (Revscan) but I didn't need to plug the black or green connectors in to read values or reset codes.

[Legacy777]

No, you don't need to have the diagnostic connectors when you use the scan tool.

[Abeall2]

In case anyone missed it here is the website where you can purchase the obd1 scanner mentioned above. http://straighttalkautomotive.com/kits/ ... 1-kit.html