Question about 1998 Audi A6
I have a 1998 audi A6 and the check engine light is on. When hooked up to the computer it reads incorrect purge flow and emissions control valve. I have replaced the hoses on the entire car and checked and rechecked the gas cap. Any suggestions?
This is the valve that connects to the carbon cannister, try to clean out the whole throttle body, all breather pipes going to and from the throttle body and the purge valve ( carbon cannister )
Posted on Feb 18, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
- Excess vacuum
- Purge flow during non-commanded conditions
- Fuel Level and Fuel Pressure sensor faults
- EVAP Purge and Vent Valve faults
The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.
P0441 1998 Toyota Camry Evaporative Emission Control System Incorrect...
Possible causes - Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve
P0441 Toyota Evaporative Emission Control System Incorrect Purge Flow
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