OBD-11 Codes list for X308 AJ27

[AndyK (Andy)]

I feel your pain.
I think your car is an AJ27.

this thread may or maynot give you some clues

2001 Eng Fault codes

So I pulled the fuse for the 4 heaters in exhaust sensors. (Wanted to stop it doing fuel trim as a trial . one of 3 things it inhibits when it gets that code) I was expecting 4 codes P01xx from memory from the jag technical document. Aj26 However the codes I got are: P0031 0037 0051 0057 They do seam to be generic codes for the heater failure. But how can I trust any future codes and why is the documentation wrong ? Thanks you