Code p01130

[Georgies]

my moms car is getting a check engine light..i had to get a rebuil motor, i got a new one from porsche. It has a Vario cam casting on the crankase..anyways, since then weve gotten 3 check engine lights and the dealer keeps on telling me its the oxyugen sensor. He told me the code was p1130. But opn this forum its p0130..its for the oxygen sensor.what should i do?

George.

[Loren]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

[Porsche_911]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

[Loren]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

[Porsche_911]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

Its a 2000 Porsche 911 C4. Thanks!

[Loren]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

Its a 2000 Porsche 911 C4. Thanks!

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit

Potential causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

– Exhaust system leaking

You have an air leak most likely.

[Porsche_911]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

Its a 2000 Porsche 911 C4. Thanks!

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit

Potential causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

– Exhaust system leaking

You have an air leak most likely.

Bank 2 is the precat sensor right? Can this be a fouled precat 02 sensor or it's not even a probable cause? Thanks!

[Loren]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

Its a 2000 Porsche 911 C4. Thanks!

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit

Potential causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

– Exhaust system leaking

You have an air leak most likely.

Bank 2 is the precat sensor right? Can this be a fouled precat 02 sensor or it's not even a probable cause? Thanks!

I do not think this is an O2 sensor problem. There are different fault codes for that.

The sensors are tested at startup and again with the engine warm - to see that they are correctly operating. If they are not they throw a different code.

[1schoir]

Bank 2 is the precat sensor right? Can this be a fouled precat 02 sensor or it's not even a probable cause? Thanks!

I believe that Bank 2 on a 996 refers to cylinders 4,5 & 6, which are on the driver's (left) side of the car (U.S. cars).

Regards, Maurice.

[RFM]

Bank 2 is on the passengers side for LHD cars ( right side ) 996/997, cylinders 4-5-6.

[Porsche_911]

Please do a search for P1130 on the forum - this has been covered many many times.

It is NOT an O2 sensor - more likely a dirty or bad MAF or intake leak.

Hi Loren,

I have the same code and used a diagnostic tool to determing if the airflow differs on idle and at 2500. There's a higher reading on 2500 RPM which indicates that my MAF is working. Is that a sufficient test or there's a specific airflow value that we should expect on idle and 2500 RPM? I just want to make sure before I purchase a precat 02 sensor. Because as per as the fault code, it is a precat 02 sensor problem. Thank you in advance!

Model and year of your car?

Its a 2000 Porsche 911 C4. Thanks!

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit

Potential causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

– Exhaust system leaking

You have an air leak most likely.

Bank 2 is the precat sensor right? Can this be a fouled precat 02 sensor or it's not even a probable cause? Thanks!

I do not think this is an O2 sensor problem. There are different fault codes for that.

The sensors are tested at startup and again with the engine warm - to see that they are correctly operating. If they are not they throw a different code.

Really! There goes my $$$. I bought a pair of genuine Porsche precat sensor already. I'll just keep it as a spare I guess. If anybody is interested, please let me know as well.

[Porsche_911]

Thank you for your responses Maurice and RFM.

[Porsche_911]

A quick update. Loren your the best! Your on the money when you said that it's not the 02 sensor. I got it fixed by replacing my MAF. No more CEL!