P1279 ACURA Possible Causes
- Low engine oil pressure or level
- Open or short circuit condition
- Faulty VTEC oil pressure switch
- Faulty VTEC solenoid
How is ACURA P1279 Code Repair Performed?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine light on (or Service Engine Soon warning light)
P1279 ACURA Meaning
The VTEC system activates the VTEC solenoid valve through commands from the Powertrain Control Module (PCM) and charges/discharges the VTEC mechanism’s hydraulic circuit, which is installed in the valve system to switch valve timing between low and high. The PCM monitors the oil pressure conditions in the VTEC mechanism’s hydraulic circuit based on the VTEC oil pressure switch downstream of the VTEC solenoid valve. If there is a disparity between the oil pressure condition in the hydraulic circuit as determined by PCM command and the oil pressure condition as determined by the VTEC oil pressure switch status, the system is considered faulty and a DTC is recorded.