Sooooo did you check for power at the components with faults?

I know everyone on here likes to fix problems by throwing parts at there cars but sometimes it is necessary to get out the volt meter & take readings.

 

mechanic did that checked all the o2s for power and the egr valve selnoid. we were trying to access on his scanner into the computer to check what the o2s are actually doing but it gives a box and you need to enter numbers to get to differnt parts of the computer like if i entered the number do that accessed all the voltage info about the mass air flow. its up to three digets but have no cluee to look up the numbers so i can enter them cause mechanics not gunna sit there all day entering random numbers anybody know what im talking about

 

nobody know what im talking about?

 

wow really out of everybody on this website none of you people can help

 

Your asking fro the display channel and measuring block numbers for the various O2 sensor voltages. If you can find a list that has them in it share it with all of us. This is info from an 01 TT coupe o2 sensor tests, have no idea if they correspond to your car or not.



2.8.3 Block 030 – Lambda Control Operating Status

Note! Before continuing:

• Adjust the engine RPM to 2000 using the handy tool, or your steady leg

Enter the Basic Settings block 030.

In block 030, the fields 1 and 2 are three-digit binary codes that give the status of
the oxygen sensors. The first digit indicates the probe heating status, the second
digit indicates the probe condition, and the third digit indicates lambda control
status. The value should fluctuate between 111 (heater on) and 011 (heater off).
The last two digits can also fluctuate between 1 and 0, but should be
predominantly 11.

Do not continue with testing until the displays have reached 111 in field 1 and
110 in field 2, at least once.

2.8.4 Block 034 – Ageing of Pre-Cat Oxygen Sensor

Enter the Basic Settings block 034.

Field 2 shows the Exhaus Gas Temperature, measured by the oxygen sensor. It
must be above 350°C for the test to succeed.

The value in field 3 is called “dynamic factor”. It is an indicator for lambda probe
ageing. The value should be above 0.5; the value for a new sensor is ~2.0. It will
decrease as the sensor ages.

The field 4 will say either ‘TEST OFF/ON’ before/while the test is running, and
either ‘B1-S1 OK’ or ‘B1-S1 NOT OK’ afterwards. It may take several minutes to
obtain result of diagnosis.

Do not continue with testing unless the field 4 is indicating “B1-S1 OK”.

2.8.5 Block 036 – Post-Cat Oxygen Sensor Diagnosis

Enter the Basic Settings block 036.

The field 2 will say either ‘TEST OFF/ON’ before/while the test is running, and
either ‘B1-S2 OK’ or ‘B1-S2 NOT OK’ afterwards. It may take several minutes to
obtain result of diagnosis.

Do not continue with testing unless the field 2 is indicating “B1-S2 OK”.

2.8.6 Block 037 – Lambda System Diagnosis

Enter the Basic Settings block 037.

The value in field 2 is the post-cat lambda probe output voltage, with range of
0.10 … 0.95V. It should remain as constant as possible. Considerable voltage
fluctuations are an indication of catalytic converter damage. A constant voltage of
0.450V is an indication of damaged wiring.

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The third field is lambda correction value between the pre and post-cat sensors.

It should stay below 0.02.

Note. If the lambda probe voltage is OK and the lambda correction value is still
greater than 0.02, even after a test drive, this is an indication of ageing of the
lambda probe upstream of the catalytic converter.

The field 4 will say either ‘TEST OFF/ON’ before/while the test is running, and
either ‘System OK’ or ‘System NOT OK’ afterwards. It may take several minutes
to obtain result of diagnosis.

Do not continue with testing unless the field 4 is indicating “System OK”.

2.8.7 Block 043 – Ageing of Post-Cat Oxygen Sensor

Enter the Basic Settings block 043.

The field 4 will say either ‘TEST OFF/ON’ before/while the test is running, and
either ‘B1-S2 OK’ or ‘B1-S2 NOT OK’ afterwards. It may take several minutes to
obtain result of diagnosis.

Do not continue with testing unless the field 4 is indicating “B1-S2 OK”.

2.8.8 Block 046 – Catalytic Converter Diagnosis

Enter the Basic Settings block 046.

Field 2 indicates the CAT Temperature (EGT), which must be more than 320°C
for the test to start. Increase engine speed if necessary.

Field 3 is the CAT Conversion Efficiency. If the cat is good, the value should be
below 0.50 at the end of the test.

The field 4 will say either ‘TEST OFF/ON’ before/while the test is running, and
either ‘CAT B1 OK’ or ‘CAT B1 NOT OK’ afterwards.

 

thanks very much im gunna try those tomorrow thanks again

 

didnt work still nothing at all dealership doesnt know they say maybe bad computer