Car throwing 12 & 13 codes at me!

[FreeJack]

Got something strange. I have turbo link 4 up and running and I'm getting a strange reading on the malfunction codes. Under normal driving conditions, I'm getting a 12,13,12 malfunction codes in that order. It does it every time.

Has anyone seen this before?

Thanks

 

[steve hughes]

It should always have code 12. That tells you the ecm can diagnose itself. 13 is oxygen sensor. Replace it.

 

[FreeJack]

I did replace the O2 Sensor.... Brand new BOSH....

Did I get a bad one???

 

[steve hughes]

The only Bosch i ever ran only lasted one run with race gas. AC's are the way to go. Does it show the sensor is active. Should be changing alot at idle.

 

[FreeJack]

Yes, At idle it is working. The readings are up and down.

Strange...