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: P2122 

• APP sensor A APS1 line open
• APP sensor A APS1 line short to ground
• APP sensor A VCC4 line open
• APP sensor A VCC4 line short to ground

DTC: P2123 

• APP sensor A APS1 line short to power
• APP sensor A SG4 line open

Common 

• APP sensor A failure
• PCM internal failure