C1604 on Hyundai
Manufacturer-Specific Chassis Code (Hyundai/Kia: ECU Hardware Error; Nissan: EPS Torque Sensor)
C1604 on Hyundai vehicles indicates manufacturer-specific chassis code (hyundai/kia: ecu hardware error; nissan: eps torque sensor). Au7o has documented this code across 1 Hyundai model — most commonly on Veloster. C1604 is a manufacturer-specific chassis code whose meaning depends on the maker. On Hyundai/Kia it generally indicates an internal ECU/control-module hardware error detected during the module's self-diagnostics (processor, memory, or internal power fault). On Nissan/Infiniti it has been associated with an electric power steering torque sensor fault. Because it disables a safety system (ABS/ESC or electric power steering) as a fail-safe, the affected feature may not work until repaired, so confirm the exact definition for the specific vehicle. Typical repair costs on Hyundai range from $200 to $1,800, depending on the specific model and root cause.
Common Causes of C1604
- •Internal control module (EBCM/ESC or EPS) hardware fault
- •Electric power steering torque sensor fault (Nissan/Infiniti)
- •Low or unstable supply voltage to the module
- •Corroded or loose module connector
- •Wiring or ground fault
- •Software/calibration issue requiring update
C1604 on Hyundai by Model
Hyundai Veloster(1 issue)
- Forward Collision-Avoidance / Driver Assistance False Warnings and Camera-Radar Malfunctions2019-2021
Owners have documented intermittent failures of the forward collision warning, lane-keeping, and related ADAS functions, including dashboard messages that the front camera or safety systems are unavailable. Some complaints involve false alerts in clear weather, while others describe the systems disabling themselves after startup or while driving. These issues are often linked to camera alignment, sensor contamination, software logic, or wiring/connectivity problems rather than a mechanical brake fault.
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View C1604 across all makes →Frequently Asked Questions
What does C1604 mean on Hyundai?▼
C1604 stands for "Manufacturer-Specific Chassis Code (Hyundai/Kia: ECU Hardware Error; Nissan: EPS Torque Sensor)." C1604 is a manufacturer-specific chassis code whose meaning depends on the maker. On Hyundai/Kia it generally indicates an internal ECU/control-module hardware error detected during the module's self-diagnostics (processor, memory, or internal power fault). On Nissan/Infiniti it has been associated with an electric power steering torque sensor fault. Because it disables a safety system (ABS/ESC or electric power steering) as a fail-safe, the affected feature may not work until repaired, so confirm the exact definition for the specific vehicle. On Hyundai specifically, this code is documented across 1 model.
What causes C1604 on Hyundai vehicles?▼
Common causes on Hyundai: Internal control module (EBCM/ESC or EPS) hardware fault, Electric power steering torque sensor fault (Nissan/Infiniti), Low or unstable supply voltage to the module, Corroded or loose module connector, Wiring or ground fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1604 on a Hyundai?▼
Repair costs on Hyundai range from $200 to $1,800, depending on the specific model and root cause.
Which Hyundai models have C1604 documented?▼
Au7o has documented C1604 on 1 Hyundai model: Veloster.