ace3166 Posted February 11, 2004 Share Posted February 11, 2004 I have a 1999 GMC Suburban K1500 5.7L and get this trouble code: P0141 O2 sensor heater circuit malfunction (bank 1-sensor 2) Can somebody verify which sensor it would be? There are 4 of them. Don't want to replace all four as the truck has only 58K and the sensors are supposed to be good for 100k. Thanks!! Link to comment Share on other sites More sharing options...
Frank S Posted February 11, 2004 Share Posted February 11, 2004 Check your fuse panel and make sure that it isn't just a blown fuse.I had the code some up for my heater circuit on B1S1 and it was just a fuse that I didn't even know existed. Link to comment Share on other sites More sharing options...
ace3166 Posted February 12, 2004 Author Share Posted February 12, 2004 Thanks, I will check that out. Anyone else know which sensor it is in case I have to replace it?? Also I which fuse panel?? under hood or inside vehicle? Link to comment Share on other sites More sharing options...
ace3166 Posted February 12, 2004 Author Share Posted February 12, 2004 All fuses are good,just need location of this O2 sensor...Somebody has to know....... Link to comment Share on other sites More sharing options...
dieselman Posted February 13, 2004 Share Posted February 13, 2004 Drivers side after the cat Link to comment Share on other sites More sharing options...
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