Fam,

Recently bought my 2010 MCS. It started throwing some codes, but I don't notice any physical issues. Please help me diagnose.

It was throwing these codes. I cleared them, then drove a bit and the below set of codes came up. Important: these came up after I let my brother hoon on it for a few minutes...:
- 303E Status: Active - Knock-control: system error
- 2D52: Status: History - VANOS magnet valve inlet, activation: shortcircuit to ground
- 2DCA: Status: History - DFES DTCM.DFC SKRKOEVAB0 C - fuel cut off becuase of super knock, cyl 4


Current codes (via BlueDriver OBD II reader):
- P2626: O2 Sensor pumping current trim circuit/open bank 1 sensor 1
- 2A8B: Status: Active - DFES DTCM.DFC LSUIAsig C - lambda probe front catalyst, alignment line
- 303E Status: Active - Knock-control: system error

Again, at no time did I hear or feel a knock or misfire. I never felt a loss of power. The CEL never came on. These are some scary looking codes to not throw a CEL??

Potentially relevant mods: Manic tune stage 1, akrapovic catted downpipe, CAI.

Please help. I can post the BlueDriver reports with the codes if needed.

Thanks!

 

If you want, we could meet at Dunkin Donuts in Roosevelt mall, and I can bring my laptop and scan your car for a cup of coffee and a bagel

 

Appreciate the offer. I did a some research and it sounds like I had a little bad fuel that set off some sensors. I filled up at Shell (and stopped using the station near my house), cleared the codes, and they haven't made an appearance since.