hello everybody im hopping someone has the answer for the problem im been dealing. i have 2002 hynday elantra it din't pass emission customer it has codes for heather on o2(B1-2) P0172 ON O2 (B1-1) SO I REPLACE THE SENSORS THE REAR O2 CODE WHEN AWAY THEN THE V...

FIX posted 1/31/2012

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