woody6

I have an 07 turbo, devoid of exhaust or other upgrades, but previously running a protomotive tune (now once again with the stock software). The car drives normally, no hesitation or misfire, but every 4-5 drives I get a CEL with these codes:

P2099 Post Catalyst Fuel Trim System Too Rich Bank 2
P2272 O2 Sensor Signal Stuck Lean Bank 2 Sensor 2
P2230 Barometric Press Circ Interm

P2227 pending Barometric Press Circ Range/Perf
P2198 pending O2 Sensor Signal Stuck Rich Bank2 Sensor 1

I'm thinking the P2230 is the actual issue, my rationale being that the engine will almost certainly be too rich or lean if the actual air pressure is not being read accurately.

Has anyone been down this path?
Am I correct in my assumption that the barometric pressure sensor will be the MAP sensor on the Y-pipe?

All suggestions much appreciated.

Woody

TT Surgeon

Could just be bad plugs and coils.

woody6

Thanks TT Surgeon, you could be right, and if the job was a little easier I would have already tried it. I may have to do that, and it is good preventative maintenance even if it doesn't resolve the problem.

On the other hand, there are mis-fire codes that this car doesn't trigger, and my (non-porsche) experience includes ECUs that detect the presence of mis-fires by the missing acceleration of the crankshaft at the time the cylinder should fire. I'm assuming Porsche's is no less sophisticated.

I have the Durametric cable and software coming soon, and will try and log the voltages from the sensors. The car drives beautifully and pulls strong, but the sporadic need to reset the light is annoying.

TT Surgeon

Some flashes can produce the rich code too if the boost ís too high in a potentially lean condition as the ecu will dump fuel to save the motor.