C1A12 on Nissan
Manufacturer-Specific Chassis Code (Nissan/Infiniti: Radar/Laser Sensor Beam Off-Center)
C1A12 on Nissan vehicles indicates manufacturer-specific chassis code (nissan/infiniti: radar/laser sensor beam off-center). Au7o has documented this code across 3 Nissan models — most commonly on Murano, Rogue, Sentra. This is a manufacturer-specific chassis code seen primarily on Nissan/Infiniti vehicles, generally associated with the forward radar/laser sensor used by adaptive cruise control and collision-avoidance systems being misaligned or 'off-center.' Because it is not a generic SAE code, the exact meaning can vary by maker and model, but it broadly points to an issue with the driver-assistance/distance sensor or its aim. When set, related systems like intelligent cruise control or forward emergency braking may be disabled. A vehicle-specific service procedure (sensor aiming/calibration) is typically required. Typical repair costs on Nissan range from $250 to $1,800, depending on the specific model and root cause.
Common Causes of C1A12
- •Misaligned or blocked forward radar/laser sensor
- •Sensor knocked out of aim by minor impact or bumper work
- •Obstruction or dirt over the sensor (snow, ice, debris)
- •Faulty distance/radar sensor
- •Wiring or connector fault at the sensor
- •Sensor calibration not performed after service/alignment
C1A12 on Nissan by Model
Nissan Murano(1 issue)
- Front Radar/Sensor Malfunctions Triggering AEB, ICC, and Forward Collision Warnings2021-2024
Owners have reported intermittent 'Front radar unavailable,' AEB/FCW warnings, disabled intelligent cruise control, and related driver-assistance faults on 2021-2024 Murano models. In many cases the system disables itself in rain, road spray, or after minor front-end impacts, but some complaints describe repeated warnings in normal conditions due to sensor alignment, bracket movement, contamination, or radar unit faults. Because these systems are tied to emergency braking and adaptive cruise functions, repeated failures are a significant safety concern.
Nissan Rogue(1 issue)
- Front Radar / Automatic Emergency Braking False Activation and Sensor Obstruction Warnings2021-2025
Multiple owners of the current-generation Rogue report the forward collision warning / automatic emergency braking system issuing sudden alerts, disabling itself, or in some cases braking unexpectedly with no obstacle present. Complaints commonly mention 'Front radar unavailable due to obstruction' or related warning messages in clear weather, sometimes recurring after restart. This is a safety-related issue because it can cause abrupt deceleration or loss of driver-assistance functions when expected.
Nissan Sentra(1 issue)
- Front Collision Warning / Automatic Emergency Braking False Activation and Sensor Malfunction2023-2025
Multiple owners of the current B18-generation Sentra report the Forward Collision Warning and Automatic Emergency Braking systems triggering warnings or braking unexpectedly, sometimes with no vehicle or obstacle present. Complaints describe sudden deceleration, repeated warning messages, and intermittent disabling of driver-assist features. This is a safety-critical issue because false braking or loss of collision mitigation can increase crash risk in traffic.
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View C1A12 across all makes →Frequently Asked Questions
What does C1A12 mean on Nissan?▼
C1A12 stands for "Manufacturer-Specific Chassis Code (Nissan/Infiniti: Radar/Laser Sensor Beam Off-Center)." This is a manufacturer-specific chassis code seen primarily on Nissan/Infiniti vehicles, generally associated with the forward radar/laser sensor used by adaptive cruise control and collision-avoidance systems being misaligned or 'off-center.' Because it is not a generic SAE code, the exact meaning can vary by maker and model, but it broadly points to an issue with the driver-assistance/distance sensor or its aim. When set, related systems like intelligent cruise control or forward emergency braking may be disabled. A vehicle-specific service procedure (sensor aiming/calibration) is typically required. On Nissan specifically, this code is documented across 3 models.
What causes C1A12 on Nissan vehicles?▼
Common causes on Nissan: Misaligned or blocked forward radar/laser sensor, Sensor knocked out of aim by minor impact or bumper work, Obstruction or dirt over the sensor (snow, ice, debris), Faulty distance/radar sensor, Wiring or connector fault at the sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1A12 on a Nissan?▼
Repair costs on Nissan range from $250 to $1,800, depending on the specific model and root cause.
Which Nissan models have C1A12 documented?▼
Au7o has documented C1A12 on 3 Nissan models: Murano, Rogue, Sentra.