P0123 is set when the voltage above 4800mV - maximum output voltage of ACV - is detected for more than 2.5 sec. This code is due to short/open in ACV circuit or ACV, ECM.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
ACV circuit monitoring | 1. ACV signal circuit short to battery or open 2. Faulty ACV | |
Enable Conditions |
•
Ignition switch "ON" | ||
Threshold Value |
•
ACV signal circuit short to battery or open | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
NO | ||
Fuel Limit |
•
NO | ||
Check Lamp |
•
YES | ||
