Shuttering / vacuum

may have to use a scan tool to rest the ECM

Codes are..
a- P1127 = Long Term Fuel Trim mult.,Bank1 System too Rich.
b- P1129 = Long Term Fuel Trim mult.,Bank2 System too Rich.
c- P1141 = Load Calculation Cross Check Range / Performance.
These refer to a fuel air mixture issue, (a,b), and a Mass Air Flow, (MAF), sensor problem, (c).

Found this for 03 audi a6 Quattro.

P1121 Ford Throttle Position Sensor Inconsistent with Mass Air Flow Sensor
http://engine-codes.com/p0401_ford.html no they are not related !
Are there any cracks in the rubber hose from air cleaner to throttle body ! That could cause the P1121 air entering after mass air flow sensor !
P1121 - Throttle Position (TP) Sensor Inconsistent with MAF Sensor The PCM monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during key ON engine running self-test the comparison of the TP sensor and MAF sensor readings are not consistent with calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory.

• Air leak between MAF sensor and throttle body
• TP sensor not seated properly
• Damaged TP sensor
• Damaged MAF sensor

Drive vehicle and exercise throttle and TP sensor in all gears. A TP PID (TP V PID) less than 4.82 % (0.24 volt) with a LOAD PID greater than 55% or a TP V PID greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a hard fault. P0401 - EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on. The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum.

• Vacuum supply
• EGR valve stuck closed
• EGR valve leaks vacuum
• EGR flow path restricted
• EGRVR circuit shorted to PWR
• VREF open to D.P.F. EGR sensor
• D.P.F. EGR sensor downstream hose off or plugged
• EGRVR circuit open to PCM
• VPWR open to EGRVR solenoid
• D.P.F. EGR sensor hoses both off
• D.P.F. EGR sensor hoses reversed
• Damaged EGR orifice tube
• Damaged EGRVR solenoid
• Damaged PCM

Perform KOER self-test and look for DTC P1408 as an indication of a hard fault. If P1408 is not present, look for contamination, restrictions, leaks, and intermittents

p1423 p1411
u either forgot to put the hoses at the air motor or air motor not working.the location is at the passenger side in front of engine behind bumper and right beside the a/c dryier.looks like a blower....
p1227 can not remember......
check light went on when the engine got warm?

Random misfires could be gas related- low fuel pressure, vacuum leaks or air leaks upsetting the air/fuel mixture ratio, clogged air filter or fuel filter. Could be ignition related- worn spark plugs, possibly. Or could be an internal mechanical problem-possible valve train malfunction.
Start with a fuel pressure test. check vacuum hoses for leaks, check intake manifold and throttle body assembly for leaks. If you have an exhaust leak at or near the engine, can cause misfires. Air going into the engine is metered by the mass air flow sensor in the big air boot on the throttle body. If extra air gets into the engine through a vacuum leak or a loose hose, the engine computer won't know it, so the air/fuel mixture will be too lean, resulting in misfiring. Several things to check-good luck.

Disconnect first the vacuum line from the EGR valve. Connect a hose to the EGR and cover it or **** on the hose.

IF the engine stumbles the passages are ok, you may just want to check the vacuum lines or the sensors itself. Otherwise try cleaning the EGR with cleaning spray before replacing.

get a can of carburetor cleaner, spray around vacuum hoses, when the sray hits a leak the engine might rev up a little

could be the sensors under the dash on the pedals ,this is not a diy job but i would recomend dealer only

http://wiki.ross-tech.com/index.php/16795/P0411/001041
Check this site for any Audi codes. This is a problem with the air that it injected into the exhaust system to help burn any uncombusted fuel. Check the air pump located in front of the pass front wheel on the bottom of the engine. It is pretty easy to find. The air pump has a suction hose that goes to the air filter housing so that it has filtered (clean) air, follow the hose