PCM sends DTC P0121 if the difference between the throttle valve position value calculated by TPS1and the designated value by PCM is over certain value when the TPS2 is abnormal.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Synchronization of signals | 1. Poor connection 2. TPS 3. PCM |
Enable Conditions |
•
IG "ON" | |
Threshold Value |
•
TPS value difference between TPS1 position and TPS2 position is higher then 6.3% | |
Diagnostic Time |
•
0.14 sec. | |
MIL ON Condition |
•
5 sec. |
