P1259 – ISUZU

Code : P1259
Make : ISUZU
Description : P1259 ISUZU VTEC System Malfunction
Possible causes :
– Low engine oil level or oil pressure
– Faulty Variable Valve Timing and Lift Electronic Control (VTEC) solenoid
– VTEC Solenoid harness is open or shorted
– VTEC circuit poor electrical connection
– Faulty VTEC oil pressure switch
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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