986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 99 Boxster Check engine light issue ( Not Normal)

porscherescuer · 05-18-2011, 11:39 AM

I got an obdII and the two codes it is showing are p1117 and p1121. I know these are the same codes it had before we replaced the o2 sensors.

P1117 Oxygen Sensor Heating 1 After Catalytic Converter - Below Lower Limit
P1121 Oxygen Sensor Heating 2 After Catalytic Converter - Below Lower Limit

I ordered a new o2 heater circuit relay since it was only $10. Any ideas?

05-18-2011, 11:39 AM	#9
porscherescuer Registered User Join Date: May 2011 Location: US Posts: 18	Update on the codes I got an obdII and the two codes it is showing are p1117 and p1121. I know these are the same codes it had before we replaced the o2 sensors. P1117 Oxygen Sensor Heating 1 After Catalytic Converter - Below Lower Limit P1121 Oxygen Sensor Heating 2 After Catalytic Converter - Below Lower Limit I ordered a new o2 heater circuit relay since it was only $10. Any ideas?