Possible Cause

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

DTC: P0522 

• Rocker arm oil pressure sensor OP SENSOR line short to ground
• Rocker arm oil pressure sensor VCC line open

DTC: P0523 

• Rocker arm oil pressure sensor OP SENSOR line open
• Rocker arm oil pressure sensor SG line open

Common 

• Rocker arm oil pressure sensor failure
• PCM internal circuit failure