P1259 HONDA - VTEC System Malfunction
- Open or short circuit condition
- Faulty VTEC oil pressure switch
- Faulty VTEC solenoid
The VTEC system activates the VTEC solenoid valve by command from the powertrain control module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that is installed in the valve system to switch valve timing between Low and High. The PCM monitors oil pressure conditions in the hydraulic circuit of the VTEC mechanism according to the VTEC oil pressure switch downstream of the VTEC solenoid valve. If there is a disparity between oil pressure condition in the hydraulic circuit that is determined by the PCM command, and the oil pressure condition that is determined by the status of the VTEC oil pressure switch, the system is considered faulty and a DTC is stored.
P1259 1997 HONDA CIVIC
P1259 1998 HONDA CIVIC
P1259 1999 HONDA CIVIC
P1259 2000 HONDA CIVIC
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