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Old 10-15-2008, 08:37 AM
mike2u
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Default knock sensor circuit high input

I have a 2003 Nisson Frontier 4x4, auto trans, 3.3 ltr engine, 125k miles. I love the truck, but I only get 17 mpg on highway. Bought an Actron scanner. I get a code: Knock sensor 1, Circuit high input, bank one or one sensor. What could be the problem? I set the timing at 8 btdc. I connected the scanner before adjusting the timing. Does this set the system in the diogostic mode. I was an excellent machanic prior to the introduction of computer controlled engines. Now I need help. Thanks for any assistance anyone can offer.
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