Fault Code P0446 1539 1126 1124

[mtimmy]

Recently hearing some buzzzz sound from the passenger near the front fender... and once in a while the car will take at least 10 seconds in cranking time before it could start. It seem like it dosen't have enough fuel or something...

I have the following codes

P0446 - I know thats the bank 2 cam sensor. I haven't really get a chance to go check it out or replace the sensor .. HOW Hard is it to replace it anyways?

P1539 - 1126 - 1124... I assume all these code are related because they all pop up at the same time...

I have a feeling the Fuel pump is dieing or the fuel filter is clogged... OR MAY BE SOMETHING else that somebody can charm in and help...

I already have a replacement fuel filter sitting on my table.. I just didn't get a chance to change it

I have a 99 C2 US

thanks

[Loren]

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Possible causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

P1124 Oxygen Sensing Adaptation Area 1 (Cylinders 1 - 3) - Rich Threshold

P1126 Oxygen Sensing Adaptation Area 1 (Cylinders 4 . 6) - Rich Threshold

This means your car is running too lean - that is, the DME can not make the mixture rich enough (and it has reached it's limit in trying to do so).

Possible causes:

- Intake air system leaking.

- Fuel pressure too low.

- Volume supply of fuel pump too low.

- Fuel injectors fouled.

Do a search here for common causes.

P1539 Camshaft Adjustment, Bank 2

Possible causes:

- Open circuit in triggering wire.

- Open circuit in B+ supply.

- Actuator faulty

[Porschelibrarian]

If you need more details on the error codes or the Porsche service manuals on the repairs PM or email me.

[willchaley]

Can anyone provide more detail on how to troubleshoot the P0446 code? Such as how to check the purge air line to see if it is blocked or how to check the EVAP canister.

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Possible causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

[Loren]

Can anyone provide more detail on how to troubleshoot the P0446 code? Such as how to check the purge air line to see if it is blocked or how to check the EVAP canister.

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Possible causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

:welcome:

It is very helpful if you tell the model and year of your car.

[willchaley]

Can anyone provide more detail on how to troubleshoot the P0446 code? Such as how to check the purge air line to see if it is blocked or how to check the EVAP canister.

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Possible causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

:welcome:

It is very helpful if you tell the model and year of your car.

Hi Loren,

It is a 99 Boxster.

Thanks,

Will

[Loren]

Can anyone provide more detail on how to troubleshoot the P0446 code? Such as how to check the purge air line to see if it is blocked or how to check the EVAP canister.

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Possible causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

:welcome:

It is very helpful if you tell the model and year of your car.

Hi Loren,

It is a 99 Boxster.

Thanks,

Will

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

Potential causes:

- Purge air line blocked.

- Flow resistance of EVAP canister too high.

There are some threads on this in the Boxster area - do a search and see what others found.

[palmtree907]

I too have this "P" code, but the car sems to run fine. other users have actuall symptoms, should I be worried? Also, I dont have the CEL coming on...