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lee-enfield · 10-13-2009, 09:00 AM

I have repeated P1130 codes that happen every couple of weeks just as the engine warms to normal operating temp if I get stopped at a traffic light. I erase the code and CEL stays off for weeks at a time. Conventional wisdom on this board is that code is set by MAF, not due to a problem with O2 sensor. I cleaned the MAF two weeks ago, but the light came on again this morning. Car runs perfectly with no perceived problems other than the CEL.

Car is a US Boxster S, 2001 model built in Finland with Tiptronic.

1. How do I further diagnose to determine if it is MAF or is actually O2 sensor? It would seem that if the code is set by a vacuum leak, there would also be a P1128 code for the other bank.
2. If it is the O2, can someone provide a photo of the location for the sensor that sets P1130 and replacement instructions. Is this on passenger side or driver's side?

Thanks,

Bruce

10-13-2009, 09:00 AM	#1
lee-enfield Registered User Join Date: Jan 2006 Location: Indiana Posts: 2	CEL with P1130 code only I have repeated P1130 codes that happen every couple of weeks just as the engine warms to normal operating temp if I get stopped at a traffic light. I erase the code and CEL stays off for weeks at a time. Conventional wisdom on this board is that code is set by MAF, not due to a problem with O2 sensor. I cleaned the MAF two weeks ago, but the light came on again this morning. Car runs perfectly with no perceived problems other than the CEL. Car is a US Boxster S, 2001 model built in Finland with Tiptronic. 1. How do I further diagnose to determine if it is MAF or is actually O2 sensor? It would seem that if the code is set by a vacuum leak, there would also be a P1128 code for the other bank. 2. If it is the O2, can someone provide a photo of the location for the sensor that sets P1130 and replacement instructions. Is this on passenger side or driver's side? Thanks, Bruce