Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
2Original wording in English
HYUNDAI
This bulletin provides information for replacement of the Blind-Spot Collision Warning (BCW) module. Whenever the left or right side BCW module is being replaced, it is required to perform the variant coding procedure. If the variant coding procedure is not performed, a DTC C1743 (S/W mismatch) will be triggered.
LEXUS
A FLASHING AHC (ACTIVE HEIGHT CONTROL) OFF LIGHT WITH DIAGNOSTIC TROUBLE CODE C1743. *TT
Check vehicle applicability
5A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Hyundai | ELANTRA ↗ | 2019 |
| Hyundai | NEXO ↗ | 2019 |
| Hyundai | SANTA FE ↗ | 2019 |
| Lexus | LX470 ↗ | 2003 |
| Lexus | LX470 ↗ | 2002 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Rear Sounder Circuit Short to Vbatt
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.