P0012
Powertrain Codes
P0012 - HYUNDAI - 'A' Camshaft Position- Timing Over-Retarded Or System Performance- Bank 1
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Lack/Loss of power - Engine rough idle
Possible Causes
- Dirty Oil - Low engine oil level - Valve Timing Control (VTC) open or shorted circuit. - Valve Timing Control (VTC) electrical connector - Faulty Valve Timing Control (VTC) - Damaged ECM
Description
The Engine Control Module (ECM) optimizes the valve timing using the Valve Timing Control (VTC). The ECM sends a target dutyandcycle control signal to the VTC. This control signal regulates the oil pressure supplied to the VTC. The VTC can advance or retard the engine timing.