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Old 05-17-2013, 03:09 PM   #1
Taj
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Help!!! My OBC Showing THIS:(

Help.... My OBC started to shows this today while I was driving. I was driving 40mph. My engine doesn't make any weird sound nor has it reduced it's power. I've tried to open and close the gas cap properly.

Am I in big trouble?

My car model is Boxster 2000 2.7L Tiptronic. Thanks for your comments



Thanks for your help.

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Old 05-17-2013, 03:21 PM   #2
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first off all U got to scan for trouble codes to c why U have MIL
go to autozone and ask for it
then post codes here
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Old 05-17-2013, 05:49 PM   #3
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Thanks for the tip... I called Autozone and I'm vising them tomorrow in the morning...said they will provide me all the trouble codes
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Old 05-17-2013, 08:51 PM   #4
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Taj,

Search the forum for CEL or Check Engine Light. There's a post where somebody provided all the codes and Porsche's summary (not the fix).

I've been driving with mine on for a month. Replaced AOS, was good for a few days, then it came on again. Now waiting for MAF.

DBear
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Old 05-17-2013, 09:05 PM   #5
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I just did my alignment in Les Schwab 3 days back... I hope that this has nothing to do with my OBC issue....
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Old 05-17-2013, 09:10 PM   #6
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You guys use a lot of acronyms I'm a new bie in Porsche forum and it's challenging
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Old 05-18-2013, 01:26 PM   #7
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An alignment can not give you a check engine light (CEL)
MAF stands for mass airflow sensor and AOS for air oil separator both of which are frequent causes for CELs
Post the error codes that you got and there are many helpful folks around here who can then give you further advise.
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Old 05-18-2013, 08:17 PM   #8
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Gentlemen,

So I visited Autozone and here are the codes:

Troubleshooting: P1115

Definition:
HO2S sensor heater circuit short to ground bank 1
Sensor 1
Explanation:
Open or short circuit condition
Probable cause:
Failed HO2S11 (Heated Oxygen sensor- Bank 1 sensor).

The other code is P0455
This is a correct. The top cover of the fuel cap magnetic lock is not functioning. It doesn't lock. I bought a new fuel cap with a key that locks the cap to secure the gas tank.

What do I do now?

Also some questions:

1. Which code reader/engine scanner/Diagnostic Tool is the best? Autozone used an Actron.
2. Can I actually disconnect the battery while I work in Boxster? There is information that I can disconnect only for 20 secs.

Please help.

Thanks.
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Old 05-18-2013, 09:35 PM   #9
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Put your old gas cap back on, replace the failed O2 sensor, and clear the codes. None of this requires the battery to be disconnected.
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2001 Boxster bought new. Installed used motor at 89k.
1987 924S. 2002 996TT. PST2
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Old 05-18-2013, 09:50 PM   #10
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Quote:
Originally Posted by Taj View Post
Gentlemen,

1. Which code reader/engine scanner/Diagnostic Tool is the best? Autozone used an Actron.
It really doesn't make a difference which OBDII scanner you're using they're all the same. If you want more (Porsche specific) info you need to get a Durametric scanner

Diagnostic Tool for Porsche | Durametric
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Old 05-18-2013, 10:54 PM   #11
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Fuel Flap

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Originally Posted by Paul View Post
Put your old gas cap back on, replace the failed O2 sensor, and clear the codes. None of this requires the battery to be disconnected.
My problem is the fuel flap and not the cap. The flap does not activate.
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Old 05-18-2013, 10:55 PM   #12
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alignment

Quote:
Originally Posted by ChrisZang View Post
An alignment can not give you a check engine light (CEL)
MAF stands for mass airflow sensor and AOS for air oil separator both of which are frequent causes for CELs
Post the error codes that you got and there are many helpful folks around here who can then give you further advise.
Thanks for the info.
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Old 05-18-2013, 10:59 PM   #13
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Scanner

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Originally Posted by ChrisZang View Post
It really doesn't make a difference which OBDII scanner you're using they're all the same. If you want more (Porsche specific) info you need to get a Durametric scanner

Diagnostic Tool for Porsche | Durametric
Thanks... I've decided to go for a more inexpensive one... Actron.
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Old 05-19-2013, 12:26 PM   #14
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I think there's a servo (an electric motor- right?) that locks and unlocks the fuel filler door. Maybe just sticking from sitting or there's corrosion in the contacts?
Hey TAJ, do you know about Sunset Porsche in Portland? cheapest OEM parts on the planet!!!
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Old 05-19-2013, 01:21 PM   #15
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Gentlemen.... so according to the scanner my problem code is P1115. Which oxygen sensor do I need to replace. How many oxygen sensors are there? Do I need to replace them all?

Is it possible that the scanner might have a faulty code because my fuel flap is broken?

Thanks for your help...I'm trying to get everything right before I buy the parts.
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Old 05-19-2013, 01:23 PM   #16
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I think there's a servo (an electric motor- right?) that locks and unlocks the fuel filler door. Maybe just sticking from sitting or there's corrosion in the contacts?
Hey TAJ, do you know about Sunset Porsche in Portland? cheapest OEM parts on the planet!!!
Hi... I just surfed their website. I don't know how their Boxster parts pricing would look like.

Thanks for sharing.
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Old 05-19-2013, 01:35 PM   #17
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I'm guessing your fuel related code is being caused by the new cap leaking air.
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2001 Boxster bought new. Installed used motor at 89k.
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Old 05-19-2013, 01:38 PM   #18
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Bank 1 is the passenger side of the car. Sensor 1 is the O2 sensor in front of the catalytic converter.

It's best if you purchase a sensor that includes the connector. Often, sensors with splices cause faults because the spliced electrical connection is weak.
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Old 05-19-2013, 01:41 PM   #19
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Battery Disconnect

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Put your old gas cap back on, replace the failed O2 sensor, and clear the codes. None of this requires the battery to be disconnected.
Hi Paul... Thanks. it's good to know that I won't fiddle with the electric line while I take care of my sensors and the fuel flap.

What if I have to disconnect the battery line for another job? Right now I've got three issues with my Boxster. It's drivable without taking care of these issues however I want to fix them all:

1. Glass not dropping while opening the passenger door. After getting help from our fellow Boxster owners I'm ready to work on this. There are threads where Boxster owner are saying battery needs to disconnected while dealing with the door. i.e. the entire panel will be taken out.

Is it okay to keep the battery disconnected for hours?

2. Fuel Flap. I still need more information. I've been browsing the net but I'm still not satisfied with the information. I may end up driving without fixing he fuel flap though CEL will always remain if I don't take care of this.

I can always buy a scanner and check regularly if my CEL is indicating anything more than my fuel flap.

3. Oxygen sensors. On the process of being fulfilled with information

To take care of all these 3 issues will be a whole day job for me

Once again your help is appreciated.
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Old 05-19-2013, 01:46 PM   #20
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Fuel Flap

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I'm guessing your fuel related code is being caused by the new cap leaking air.
Hi Paul my Fuel Flap does not work. Will it trigger a troubleshooting code? The pin that locks the fuel flap is totally out of order.

I can still go back to my Porsche Fuel cap however the OBC might be activating this code about the fuel cap.

Thanks... I'll visit Autozone with my original fuel cap and see if the code is gone.

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