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2006 Audi A4 2.0L Poor Idle Quality, MIL Lamp on
This vehicle has the classic bad pcv valve issue...rough idle and hunting and idle erratic. Crankcase vacuum is low like normal and oil cap comes off with light suction. I replaced the pcv valve anyway as I have fixed this issue many times. Problem still t...
FIX posted 3/9/2026
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Message Closed w/FIX
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12 Replies Received
12 Replies Received
Related Documents & Media | VIN | [No VIN Available] |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Occurs | Idle |
Message Closed w/FIX
Vehicle Data
2006 Audi A4
| VIN | [No VIN Available] |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Occurs | Idle |
Video