Fault Analysis of VVT Solenoid

Fault Analysis of VVT Solenoid

(1)Vehicle Information:

◆ Model: 2006 Hyundai Elantra.

◆ Engine: 1.6 liters.

◆ Mileage traveled: 202,163 kilometers.

(2)Fault phenomenon:

◆ After the overhaul, the engine vibrates and the fault light comes on.

(3)Troubleshooting and troubleshooting:

◆ Knowing the maintenance history of the vehicle, the fault occurred after the engine was overhauled, and the fault code of P0016 refers to the unreasonable position of the crankshaft position sensor and the camshaft, then through analysis, the possible reasons are:

◆ The timing is wrong;

◆ Insufficient oil pressure;

◆ The camshaft position sensor is faulty;

◆ The crankshaft position sensor is faulty;

◆ The oil pressure is too low;

◆ The VVT (variable timing valve system) solenoid valve is damaged;

◆ The VVT Sprocket damaged.

Through the analysis of the fault codes, it is decided to start the inspection from the periphery, from simple to complex. The Vvt Solenoid Valve can be directly energized to determine whether the solenoid valve is normal. After testing, it was found that the solenoid valve was stuck, and it was directly replaced to solve the fault.As the picture shows: