When the error code 000175 / P00AF appears in the VAG COM the possible symptons are the following:
- Malfunction Indicator Light (MIL) ON
- Glow Plug light flashing
- Reduced engine performance
The possible Causes for the appearing of the 000175 / P00AF error code are the following:
- Defective N75
- Vacuum leak or low vacuum
- VNT sticking or seized
- G581 sensor
Possible Solutions for solving the 000175 / P00AF error code are the following:
- Verify N75 is working to design, use Output Testing
- Verify vacuum lines are good, check engine vacuum at idle
- Test VNT and G581, apply vacuum to VNT and watch MVB 120.4
- Engine off, no vacuum 120.4 should read about 3.5V
- Engine Off, apply 17 Inches of mercury, 120.4 should drop to about .7V
- Engine at idle, 120.4 should read about 7.V
- If 120.4 voltage doesn't alter, VNT may be seized or G581 failed
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