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Variable Valve Timing Pressure Switch: Testing and Inspection














The scan tool indicates Diagnostic Trouble Code (DTC) P1279: A problem in the Front VTEC Pressure Switch circuit or Front VTEC Solenoid Valve circuit.

The scan tool indicates Diagnostic Trouble Code (DTC) P1259: A problem in the Rear VTEC Pressure Switch circuit or Rear VTEC Solenoid Valve circuit.

Refer to How to Display and Read Diagnostic Trouble Codes before troubleshooting.