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**CRASH** 98 tahoe obd2 codes
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<blockquote data-quote="crash2" data-source="post: 1448665" data-attributes="member: 15940"><p>P0141 and P0161 are for the heater for both post cat O2's. Check the ENG1 fuse to see if its blown. If it is you either have a short or a problem with one of the o2's. I can't see both having the same heater problem</p><p></p><p>P0304 as eric said is a miss fire on cylinder #4</p><p></p><p>P0420 is a 3 way catalyst code for your bank 1 catalytic converter. You need to get the heater issue resolved to verify the catalyst operation but I am pretty sure its a bad cat. A missfire will kill a cataytic converter but whats odd is the catalyst code is for the other bank than the miss.</p><p></p><p>None of these will cause any shift issues that your having and in 98' its a VCM and all trans control is in the VCM (not a seperate module)</p><p></p><p>Hope this helps</p></blockquote><p></p>
[QUOTE="crash2, post: 1448665, member: 15940"] P0141 and P0161 are for the heater for both post cat O2's. Check the ENG1 fuse to see if its blown. If it is you either have a short or a problem with one of the o2's. I can't see both having the same heater problem P0304 as eric said is a miss fire on cylinder #4 P0420 is a 3 way catalyst code for your bank 1 catalytic converter. You need to get the heater issue resolved to verify the catalyst operation but I am pretty sure its a bad cat. A missfire will kill a cataytic converter but whats odd is the catalyst code is for the other bank than the miss. None of these will cause any shift issues that your having and in 98' its a VCM and all trans control is in the VCM (not a seperate module) Hope this helps [/QUOTE]
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**CRASH** 98 tahoe obd2 codes
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