Do knocks cause CEL ? Dyno tuned stg2, lview inside

I had a dyno tune done on the 7/18

 

Been driving fine, did a log and learning view that whole week, no anomalies.

 

Today I was driving and CEL pops,

 

I cleared the reset the ECU, and CEL went away, and grabbed a quick learning view shot in the process.

 

I didn't think knock was enough to throw a cell ?

How severe is this knock, and by the looks of it, good thing I am scheduled for a re-tune on the 18th.

 

Just asking to see if I can drive normally till the 18th or if I should just baby her till re-tune.

 

thanks for any advice

That -4.2 is very bad knock. Take it easy on the car until you tune that out.

Enable your DTC reader in learning view, so you can see what code is being thrown.

Thanks guys

 

logan:

 

I figured out the code was P0420......pre cat threshold error.

 

Guess I just got lucky catching that severe knock due to the CEL.

 

I am going to just disable that with ECUflash.

Thanks guys

 

logan:

 

I figured out the code was P0420......pre cat threshold error.

 

Guess I just got lucky catching that severe knock due to the CEL.

 

I am going to just disable that with ECUflash.

 

Don't just disable the code....it's there for a reason. You need to tune out that knock or step down to a more conservative tune for the time being.

The P0420 is one of the codes you have to disable, if you remove a cat from your car. You need to adjust your tune, however. The good thing is you IAM is still at 1