Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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The P1665 code is for a fault in the evap vent solenoid control circuit. Inspect the wiring to this solenoid. If the wiring is okay, replace the solenoid. The vent solenoid is located under the vehicle near the fuel tank and canister.
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The P0341 code is for the camshaft position sensor circuit. Check the following things.