12B404 and 1E5A20 codes questions

[MichelDionne]

Hi all,

Just put the car back on the road after 5 months of storage and a couple codes are popping up that never did before
- 12B404 O2 sensor
- 1E5A20 Engine torque

Running BM3 Stage 2 OTS

Everything works fine, not in limp mode or anything of the sort.

Am pretty inexperienced, would appreciate some advice on where to go from here.

Should I be worried?

Thanks

[TopJimmy]

Take an easy long drive to use up the old gasoline and fully heat up your exhaust system. This should cook your o2 sensors clean of any moisture or crap...

Then put in 5gal gas + 1gal E85 and go do some harder runs.

Next time consider a process to store your car...find 5gal of non-ethanol fuel...or add a light dose of StaBil fuel stabilizer to 5gal pump gas. I say 5gal so it's easy to run out after storage. Because of the shape of out fuel cell (two saddlebag shape) it's hard to siphon a tank empty.

[MichelDionne]

Thanks for the reply
Actually thought I'd get away with your suggestion, as it took longer to throw that code after a long drive, but eventually did

Replaced the post cat sensor and all good

M

Originally Posted by TopJimmy

Take an easy long drive to use up the old gasoline and fully heat up your exhaust system. This should cook your o2 sensors clean of any moisture or crap...

Then put in 5gal gas + 1gal E85 and go do some harder runs.

Next time consider a process to store your car...find 5gal of non-ethanol fuel...or add a light dose of StaBil fuel stabilizer to 5gal pump gas. I say 5gal so it's easy to run out after storage. Because of the shape of out fuel cell (two saddlebag shape) it's hard to siphon a tank empty.