C1A17 on Nissan
Radar / Driver-Assist Sensor Fault
C1A17 on Nissan vehicles indicates radar / driver-assist sensor fault. Au7o has documented this code across 1 Nissan model — most commonly on Titan. C1A17 is a manufacturer-specific chassis code (documented on Nissan/Infiniti) associated with the front radar/laser driver-assistance sensor system. It generally indicates the module detected a malfunction, blockage, or invalid condition with the collision-avoidance sensor used for features like automatic emergency braking and adaptive cruise control. When set, the affected ADAS features are typically disabled and a warning is displayed. Because this is a manufacturer code, confirm the precise sub-condition against the factory service manual. Typical repair costs on Nissan range from $200 to $1,400, depending on the specific model and root cause.
Common Causes of C1A17
- •Faulty front radar/laser sensor
- •Sensor blocked by dirt, ice, or debris
- •Sensor misalignment or mounting damage
- •Damaged wiring or connector
- •Low system voltage or poor ground
- •Radar/ADAS control module fault
C1A17 on Nissan by Model
Nissan Titan(1 issue)
- Blind Spot Warning / Rear Cross Traffic Alert False Warnings or Inoperative Sensors2020-2024
Owners have reported blind spot monitoring and rear cross traffic alert systems giving false warnings, becoming unavailable, or showing persistent malfunction messages on 2020+ Titans. The problem is often linked to rear bumper radar sensor alignment, water intrusion, impact damage from minor bumps, or calibration issues after bumper work. While not usually immobilizing, it disables a key driver-assistance feature and can create nuisance alerts.
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View C1A17 across all makes →Frequently Asked Questions
What does C1A17 mean on Nissan?▼
C1A17 stands for "Radar / Driver-Assist Sensor Fault." C1A17 is a manufacturer-specific chassis code (documented on Nissan/Infiniti) associated with the front radar/laser driver-assistance sensor system. It generally indicates the module detected a malfunction, blockage, or invalid condition with the collision-avoidance sensor used for features like automatic emergency braking and adaptive cruise control. When set, the affected ADAS features are typically disabled and a warning is displayed. Because this is a manufacturer code, confirm the precise sub-condition against the factory service manual. On Nissan specifically, this code is documented across 1 model.
What causes C1A17 on Nissan vehicles?▼
Common causes on Nissan: Faulty front radar/laser sensor, Sensor blocked by dirt, ice, or debris, Sensor misalignment or mounting damage, Damaged wiring or connector, Low system voltage or poor ground. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1A17 on a Nissan?▼
Repair costs on Nissan range from $200 to $1,400, depending on the specific model and root cause.
Which Nissan models have C1A17 documented?▼
Au7o has documented C1A17 on 1 Nissan model: Titan.