B121400 is set when LIN data from "REAR PARKING ASSIST SENSOR LH" is not transmitted to "BCM" caused by the LIN communication line/the ultrasonic sensor fault or LIN data is abnormal.
Item | Conditions for setting DTC | Possible Cause |
DTC Strategy |
•
Check CAN communication | 1. Foreign substance around sensor 2. Trapped sensor rubber 3. LIN communication fail 4. Sensor open/poor connection 5. Faulty sensor |
Enable Conditions |
•
IG key "ON"
•
"R" range | |
Threshold Value |
•
LIN data is not received | |
Diagnostic Time |
•
Immediately | |
DTC Erasing |
•
Erased DTC after solved problem |
