Problem Understanding Codes

[daniel3507]

I went and picked up a code reader and pulled codes. In the KOEO I got a 536. In the KOER test I got the same code and a 538. I hit the gas when i was supposed to me maybe i didnt give it enough? And when it said it was testing 4 cylinders? Those are the only two codes i got and after waiting awhile to make sure it wasnt still pulling codes it turned it off and the motor reved up but when back down to normal before i shut it off. I was told by a mechanic that my ABS control module was out so im thinking that is why the 536 code came up. This is my first time pulling codes so im totally new to this.

 

[daniel3507]

Okay so I went out and tried it again and it said it was testing 6 cylinders and got the 536 code. Im pretty sure i hit the brakes when i was supposed to. My third brake light is always on though and my ABS module is out. Could that be causing it? Would that prevent any other codes from showing up?