8th Generation Honda Civic Forum - View Single Post - CEL:Code P0135 - Heat Circuit Malfunction
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Old 03-18-2008, 06:03 PM   #3 (permalink)
aarong_hch
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Join Date: Dec 2007
Location: Bay Area -East Bay
Posts: 53
The dealership says that if i have aftermarket amps/speakers it can through a code and loose voltage to the 02 sensor.
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