DTC Table
Precautions: Precautions for Headlight Auto Leveling System Service · Precautions for Body, Cab and Accessories · General safety (00)
LED Headlight System
| DTC | DTC name | DTC detecting condition | LED headlight warning light |
|---|---|---|---|
B1957 
|
Right Side Headlight Control Circuit / Open | Right side headlight unit diagnosis signal circuit voltage is higher than 1.5 V for specified time. | Lights up |
| B1958
|
Left Side Headlight Control Circuit / Open | Left side headlight unit diagnosis signal circuit voltage is higher than 1.5 V for specified time. | Lights up |
Headlight Auto Leveling System
| DTC | DTC name | DTC detecting condition | Headlight auto leveling warning light |
|---|---|---|---|
| B1950
|
Control Module Programming Error | Headlight auto leveling control module internal failure. | Lights up |
| B1951
|
Ignition Power Supply Voltage Data Malfunction | Any of the following conditions is met.
•Headlight auto leveling control module power supply circuit voltage is higher than 16.4 V for 10 sec.
•Headlight auto leveling control module power supply circuit voltage is lower than 9.3 V for 10 sec. |
OFF |
| B1956
|
Rear Height Sensor Error | Any of the following conditions is met.
•Rear vehicle height sensor signal circuit voltage is higher than 4.75 V for 10 sec.
•Rear vehicle height sensor signal circuit voltage is lower than 0.25 V for 10 sec. •Rear vehicle height sensor power supply voltage is higher than 6.25 V for 10 sec. •Rear vehicle height sensor power supply voltage is lower than 4.45 V for 10 sec. |
Lights up |
| B1967
|
Lack of Height Sensor Initial Setting | Rear vehicle height sensor initial setting is not completed. | Lights up |
| B1970
|
Wheel Speed Sensor and/or Its Circuit Malfunction | Vehicle speed signal is not inputted by CAN communication. | Lights up |
| U0073
|
Control Module Communication Bus Off | OFF | |
| U0100
|
Lost Communication With ECM | OFF |