Same code P1126, P0102

[mp911]

2001 C2 with 80K miles

From another post:

===================================================

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load 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

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

The problem is not your O2 sensors.

The first place to start is the MAF.

Your mechanic should know he needs to look at the MAF readings at idle and 2500 RPM. If there are not within spec then the MAF needs to be cleaned or replaced.

=======================================

I have the codes P1126 and P0102.

Durametric readings on MAF are:

Idle (~780rpm) - MAF ~ 17.2 to 18.4 kg/h

~2500 RPM - MAF ~49 kg/h

Any thoughts on if these are in range, or a place to narrow these down?

Thanks

Mark

[Loren]

2001 C2 with 80K miles

From another post:

===================================================

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load 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

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

The problem is not your O2 sensors.

The first place to start is the MAF.

Your mechanic should know he needs to look at the MAF readings at idle and 2500 RPM. If there are not within spec then the MAF needs to be cleaned or replaced.

=======================================

I have the codes P1126 and P0102.

Durametric readings on MAF are:

Idle (~780rpm) - MAF ~ 17.2 to 18.4 kg/h

~2500 RPM - MAF ~49 kg/h

Any thoughts on if these are in range, or a place to narrow these down?

Thanks

Mark

Looks pretty close. Have you tried cleaning the MAF?

(chart below is for MY2000 and up egas 996 cars only)

[mp911]

2001 C2 with 80K miles

From another post:

===================================================

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load 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

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

The problem is not your O2 sensors.

The first place to start is the MAF.

Your mechanic should know he needs to look at the MAF readings at idle and 2500 RPM. If there are not within spec then the MAF needs to be cleaned or replaced.

=======================================

I have the codes P1126 and P0102.

Durametric readings on MAF are:

Idle (~780rpm) - MAF ~ 17.2 to 18.4 kg/h

~2500 RPM - MAF ~49 kg/h

Any thoughts on if these are in range, or a place to narrow these down?

Thanks

Mark

Looks pretty close. Have you tried cleaning the MAF?

(chart below is for MY2000 and up egas 996 cars only)

Cleaned it today, codes have not returned. I will keep an eye on it. Thanks Again.

Mark

[mp911]

2001 C2 with 80K miles

From another post:

===================================================

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load 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

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

The problem is not your O2 sensors.

The first place to start is the MAF.

Your mechanic should know he needs to look at the MAF readings at idle and 2500 RPM. If there are not within spec then the MAF needs to be cleaned or replaced.

=======================================

I have the codes P1126 and P0102.

Durametric readings on MAF are:

Idle (~780rpm) - MAF ~ 17.2 to 18.4 kg/h

~2500 RPM - MAF ~49 kg/h

Any thoughts on if these are in range, or a place to narrow these down?

Thanks

Mark

Looks pretty close. Have you tried cleaning the MAF?

(chart below is for MY2000 and up egas 996 cars only)

Cleaned it today, codes have not returned. I will keep an eye on it. Thanks Again.

Mark

Well, the codes are back. After cleaning the MAF sensor with CRC MAF Cleaner, and driving at highway speeds (on way to a DE track day, kept going, car did well...) have the following codes read with Durametric:

P1126

Porsche fault code 356 - Multiplic. mixture adapt.

lower load range B.1:

P1133

Porsche fault code 358 - Multiplic. mixture adapt.

lower load range B.2:

P0102

Porsche fault code 115 - Mass air flow sensor

below limit value

P1125

Porsche fault code 357 - Multiplic. mixture adapt.

upper load range B.1: exceeds limit value

P1132

Porsche fault code 359 - Multiplic. mixture adapt.

upper load range B.2: exceeds limit value

Time for a new MAF sensor?

Mark

[Loren]

It would appear so.