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.
Manufacturer communications
6Original wording in English
FORD
Reported code forms C1A03:A2
Some 2025-2026 Mustang GTD vehicles built on or before 28-Sep-2026 may exhibit one or more of the following hydraulic system warning messages displayed in the instrument panel cluster (IPC): "Suspension Fault Speed…
NISSAN
Reported code forms C1A03
ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
INFINITI
Reported code forms C1A03
ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. Please see AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
INFINITI
Reported code forms C1A03
ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. The Applied Vehicles section has been revised. No other changes have been made. Please discard previous versions of this…
NISSAN
Reported code forms C1A03
ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin applies only to vehicles equipped with Automatic Emergency Braking (AEB) or Forward Emergency Braking (FEB). SERVICE INFORMATION If the…
INFINITI
Reported code forms C1A03
ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION SERVICE INFORMATION If the following ICC/ADAS codes are stored, make sure to follow the diagnostic procedures in the Electronic Service Manual (ESM) before…
Check vehicle applicability
40A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | MUSTANG GTD | 2026 |
| Ford | MUSTANG GTD | 2025 |
| Infiniti | Q50 | 2018 |
| Infiniti | Q50 | 2017 |
| Infiniti | Q50 HYBRID | 2018 |
| Infiniti | Q50 HYBRID | 2017 |
| Infiniti | Q60 | 2018 |
| Infiniti | Q60 | 2017 |
| Infiniti | Q70 | 2018 |
| Infiniti | Q70 | 2017 |
| Infiniti | Q70 HYBRID | 2018 |
| Infiniti | Q70 HYBRID | 2017 |
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.
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.