ALL THESE CODES!! WHY!?!

[SHODOGG]

Ok well my car runs a lot better since I got my plugs/wires but its still just a BIT off so I decided to run the codes. Heres what they said(not sure if the LPM has anything to do with any of them):
511-EEC Processor ROM test failure
172-HEGO indicates system lean RH
411- Cant control RPM during self-test low RPM check
275-Knock Sensor not sensed during dynamic response test
542-Fuel pump secondary circuit failure

So what should I check/replace as a result of these codes? Im thinkin one of my 02's might be bad? and that Knock sensor one kinda scares me

 

[Shoman594]

Luke,

I say clear those codes... Disconnect the battery, then press the brake to drain all of the power if there is any in the system. This will clear the codes. Now you will have a fresh slate and if there is a problem that code will show up, not a whole bunch like when you did it today, those are all of the codes that are in the computer. Dont forget to let the car relearn its idle before you drive away!

 

[Diameg]

The 511 is exactly due to the LPM, no problem there. If you had an LPM and didn't get the 511, there would be a problem.
The 02 sensor could be faulty, how old is it?
Do you have an idle problem? My idle goes between 600 and 900 and I also get the 411, simply because the computer cannot control the idle (I don't know why).
542 probably means the car stalled at some point.

As per Shoman's suggestion, try clearing the codes and do the test again, and also if you get more codes, note if they are in the KOEO or KOER.

 

[sdpatt]

The knock sensor is also not a problem. That just means that there wasn't knock detected during the "goose" test. The O2 sensor is most likely bad. The inability to control the idle is probably due to the IAC valve not responding linearly.