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Loren, have you ever heard of a Purge Valve on a Cayenne S. its related to P0441 Incorrect Purge Flow error

Its supposed to be under the design covers drivers side. I cannot see on PET, I admit I am still not used to it tho.

Mike

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P0441 Fuel tank ventilation system above limit value/below limit value

Possible causes:

- Tank vent faulty (remains stuck in an open or closed position)

- Tank vent installed the wrong way round

- Leak in scavenging lines between tank vent and positive crankcase ventilation (in the Turbo via a T-piece also on the intake side of the turbocharger)

- Scavenging lines between tank vent and positive crankcase ventilation trapped or blocked (in the Turbo via a T-piece also on the intake side of the turbocharger)

post-1-1248461902_thumb.png

1 - Mass air flow sensor, right

2 - Fuel injector, cylinder 1, bank 1

3 - Fuel injector, cylinder 2, bank 1

4 - Fuel injector, cylinder 3, bank 1

5 - Fuel injector, cylinder 4, bank 1

6 - DME control module

7 - Electric fuel pump, right

8 - EVAP canister

9 - Fuel tank

10 - Electric fuel pump, left

11 - Driver's door lock with switch for fuel pump supply

12 - Current distributor with cutoff relay under driver's seat

13 - KESSY control module

14 - E-box in radiator tank with fuse and relay carrier

15 - Pedal sensor

16 - Fuel injector, cylinder 8, bank 2

17 - Fuel injector, cylinder 7, bank 2

18 - Fuel injector, cylinder 6, bank 2

19 - Fuel injector, cylinder 5, bank 2

20 - Tank vent valve

21 - Mass air flow sensor, left

22 - Positive crankcase ventilation heater

23 - Throttle adjusting unit

If you need more troubleshooting info let me know...

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Is item 20 , the check valve, the one reffered to as Tank Vent Valve ( PET Section 1 107-00) item 13 ?

P0441 Fuel tank ventilation system above limit value/below limit value

Possible causes:

- Tank vent faulty (remains stuck in an open or closed position)

- Tank vent installed the wrong way round

- Leak in scavenging lines between tank vent and positive crankcase ventilation (in the Turbo via a T-piece also on the intake side of the turbocharger)

- Scavenging lines between tank vent and positive crankcase ventilation trapped or blocked (in the Turbo via a T-piece also on the intake side of the turbocharger)

post-1-1248461902_thumb.png

1 - Mass air flow sensor, right

2 - Fuel injector, cylinder 1, bank 1

3 - Fuel injector, cylinder 2, bank 1

4 - Fuel injector, cylinder 3, bank 1

5 - Fuel injector, cylinder 4, bank 1

6 - DME control module

7 - Electric fuel pump, right

8 - EVAP canister

9 - Fuel tank

10 - Electric fuel pump, left

11 - Driver's door lock with switch for fuel pump supply

12 - Current distributor with cutoff relay under driver's seat

13 - KESSY control module

14 - E-box in radiator tank with fuse and relay carrier

15 - Pedal sensor

16 - Fuel injector, cylinder 8, bank 2

17 - Fuel injector, cylinder 7, bank 2

18 - Fuel injector, cylinder 6, bank 2

19 - Fuel injector, cylinder 5, bank 2

20 - Tank vent valve

21 - Mass air flow sensor, left

22 - Positive crankcase ventilation heater

23 - Throttle adjusting unit

If you need more troubleshooting info let me know...

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Item 20 is correct. Carefully check all of the hard plastic lines associated with the valve as they can crack and split where the line meets a fitting. The plastic line is heat shrunk onto a barbed portion of a fitting and that's the most common place they fail.

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Thanks, just destroy the old part when replacing or hoses required ?

Item 20 is correct. Carefully check all of the hard plastic lines associated with the valve as they can crack and split where the line meets a fitting. The plastic line is heat shrunk onto a barbed portion of a fitting and that's the most common place they fail.

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I've never actually had to replace the valve, the fault has always been a break in one of the hard lines which I repaired with dual wall shrink tube.

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7 minutes ago, Nehmaiz said:

can someone give me the part number for item 20? the tank vent valve?

 

Exact model and year of the car, please.

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11 minutes ago, Nehmaiz said:

2009 cayenne S.

thanks Loren!

 

Is this car a US/Canada car or RoW?

I do not think RoW cars do not have that part.

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American spec Car WP1AB29P39LA40478

 

I recently moved to florida i will update my avatar to reflect that, i am no longer living in dubai

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Loren any chance of getting the PET diagram for the tank vent valve 955 605 241 00 ?

I have checked everywhere online and can't find a single PET diagram to see where this part is. i went to sunset porsche and they printed out the diagram for the V6 engine, and he couldn't get me a diagram for the 4.8L V8.

 

Thanks in advance

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