![]() ![]() Field 2 is the same thing but for the post-cat oxygen sensor. Field 1 is a three-digit binary code which gives the status of the pre-cat oxygen sensor. If it's lower than 1 g/s, then there is probably a leak in the intake tubing between the MAF and manifold. The value at idle should be between 1 and 25 g/s. Make sure the car is running and warmed up and the A/C is off. ![]() I'm not positive about the initiation procedure with a 2.0 engine, but from what I've found, with an AEG engine you manually raise the engine speed to between 18 RPMs, and with the AVH and AZG engines, you derpress the accelerator to the WOT (wide open throttle) position to raise the engine speed to ~2000 RPMs. For a 1.8T engine, see this THREAD for instructions on how to initiate the tests. If you have a 1.8T or 2.0 engine, the procedure from running the automated tests is slightly different. ( NOTE: The following tests are MKIV VR6 specific. Let me know if you have any questions about how to run the tests. Blocks 002, 030, 032 and 033 are done in "Measuring Blocks" while blocks 036, 034 and 046 are done in "Basic Settings". In order to test your MAF, O2 sensors and catalytic converter, check out the following blocks in the "Engine" control module with your VAG-COM. ![]()
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