topgun77

Help! What is the easy, fast, cheap, miracle remedy. Need to get the car
smogged and the smog shops won't even put it on the machine until the light is out.

Schnell Gelb

Tried search??Common issue,much discussed and remedy available
https://rennlist.com/forums/996-foru...e-opinion.html

Macster

P1128 Oxygen Sensing Adaptation, Idle Range, Bank 1 – Above Limit
P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit
Possible fault 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

I've had these codes a couple of times.

While there are a number of possible causes, my experience has been the intake air system was leaking.

In one case the leak proved to be a leaking oil filler tube cap. It leaks at idle speed and the air represents are good portion of the total air the engine is consuming. Hence the error codes.

But at higher engine speeds the air leaked in represents a much smaller portion of the total air the engine is using.

In another case the AOS was the culprit.

For the oil filler tube cap with the engine up to temperature and idling see if when you move the oil filler tube cap about the engine reacts. Try to pull up on the cap and see if the engine reacts. If it does I'd just replace the cap.

Clear the error codes and road test the car. If the error codes come back then one has to suspect the AOS.

if the codes don't come back be sure you drive the car enough that all the readiness monitors are set to complete or even with no CEL the car will fail emissions.

Aspen Autosports

Try to clean the Mass Air Flow Meter as a start.