DTC P2091-00: Hydraulic Variable Valve Timing Control System: High Input

P2091: 00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Hydraulic variable valve timing control system: High input
Detection condition	The oil control valve (OCV) control voltage relative to the PCM control is too high.
Fail-safe	Set the exhaust variable valve timing control to the maximum advanced position. Inhibits engine-stop by i-stop control.
Possible cause	Malfunction in wiring harness (including connector/terminal) between oil control valve (OCV) and PCM (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Oil control valve (OCV) malfunction (Refer to [HYDRAULIC VARIABLE VALVE TIMING ACTUATOR INSPECTION ] in service information). PCM malfunction (Refer to [PCM REMOVAL/INSTALLATION ] in service information).
Repeatability verification procedure	Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the KOER self test. (See DTC INSPECTION .)
Courtesy of MAZDA MOTORS CORP.
1	Battery
2	Main relay
3	Oil control valve (OCV)
4	PCM