Tons of codes, need help.

[Sundevil84]

So I just changed my D.V. and MAF about 3 weeks ago. Car was running fine. Then today it idled strange and I got a flashing CEL for 3 seconds that went away. I figured I had a Coil Pack on the way out. By the time I got to my office (2miles) the CEL was constant. I ran my codes and look what I got:

P1114
P1297
P1137

Also Got misfire codes:
P0300
P0302
P0304

Could one problem be causing this many codes? I don’t know where to start looking so any help would be much appreciated.

[Matt Devo]

here's a good place to start: http://wiki.ross-tech.com/wiki/index...ry:Fault_Codes

[Sundevil84]

I understand what the codes mean:

P1114- Oxygen sensor problem
P1297- Pressure drop between turbo and throttle body
P1137- System to rich

Plus the multiple misfires. My questions is could one thing cause all these problems?

[Charles.waite]

Sounds like you got a large boost leak. That could cause misfires I suppose. Check your intercooler piping and make sure the clamps are tight, check the TB and Turbo Inlet pipe to make sure there aren't any leaks. You might want to do a boost leak test.

If the MAF is telling the engine there is 200g/s of air coming in, but only 150g/s of air reaches the combustion chamber, the ECU will not know that and dump enough fuel for 200g/s of air into the chamber. This causes teh rich condition and probably triggers the O2 as well.

[Miguel4u2]

Check coils first, i had one bad coil throw 5 codes lol, i would replace all of them with quality ones ( i did the free recall) because after you replace one, they all start going.