P2123 is set when output voltage of APS 1 is above the maximum value of 4.789V for more than 0.18 sec. This code is due to the short to battery in APS 1 power circuit and signal circuit or open in sensor ground circuit.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. APS 1 power circuit or short to battery 2. APS 1 ground circuit open 3. APS 1 signal circuit short to battery 4. Faulty APS | |
Enable Conditions |
•
IG "ON" & Engine "ON" | ||
Threshold Value |
•
When output signal of APS1 above 4789mV | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
NO | ||
Fuel Limit |
•
YES | ||
Check Lamp |
•
YES | ||
