96lsilegacy Posted October 24, 2010 Share Posted October 24, 2010 i have a 1996 legacy lsi 2.5 a/t and like clock work the light comes on for egr flow and bank 1 sensor 2 heating circuit for the o2 sensor i was wondering if any one had these problems ive tried cleaning the egr valve out its not stuck or gummed up ive seafoamed the intake the o2 sensor started happing after i took the exhaust off to do the transfer clutches and ice checked the whole o2 harness ohming it out and nothing seems to have a short at this point im assuming the sensor just has a bad internal heating circuit any help would be appreciated thanks Link to comment Share on other sites More sharing options...
Zues Marine Posted October 24, 2010 Share Posted October 24, 2010 #s? Link to comment Share on other sites More sharing options...
98quiksilvergt Posted October 25, 2010 Share Posted October 25, 2010 I had the same combo. After I installed new cats the code never returned. It's been about 5,000 miles since. Link to comment Share on other sites More sharing options...
bengt Posted October 27, 2010 Share Posted October 27, 2010 change the o2 sensor and the BPT valve. the heater is built into the o2 and cant be fixed and if youve cleaned the EGR system really well, its most likely BPT. Link to comment Share on other sites More sharing options...
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