P2138 is set when there is difference above the threshold value between APS1 and (APS2 * 2) for more than 0.24 sec.Careful inspection of poor connection between APS 1 and APS 2, resistance characteristic of APS component is needed.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. APS 1 & 2 circuit error 2. Faulty APS | |
Enable Conditions |
•
IG "ON" & Engine "ON" | ||
Threshold Value |
•
Difference of APS 1 voltage and APS 2 voltage is greater than threshold value | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
NO | ||
Fuel Limit |
•
YES | ||
Check Lamp |
•
YES | ||
