+1 vote

2006 Honda Civic SI won't pass 4k RPMs. I have replaced the vtec oil pressure switch and have replaced the vtec solenoid

Vehicle: 2006 Honda Civic SI

2 Answers

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Best answer
P2647 Rocker arm oil pressure switch circuit high voltage

Circuit high mean there is no connection or contact with the switch , check the harness connection to the switch for any opens.This code is a connection problem
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P2647 Honda Code - Rocker Arm Oil Pressure Switch Circuit High Voltage
Read more: https://www.autocodes.com/p2647_honda.html

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