C1A16 on Infiniti
Manufacturer-Specific Chassis Code (Nissan/Infiniti: Radar/Distance Sensor Obstruction or Misalignment)
C1A16 on Infiniti vehicles indicates manufacturer-specific chassis code (nissan/infiniti: radar/distance sensor obstruction or misalignment). Au7o has documented this code across 1 Infiniti model — most commonly on QX60. C1A16 is a manufacturer-specific chassis code commonly seen on Nissan and Infiniti vehicles equipped with intelligent cruise control and forward-collision/automatic emergency braking, where it relates to the front radar/distance sensor being blocked, dirty, misaligned, or otherwise unable to function. The driver-assistance module monitors the radar and sets this code when the sensor's view is obstructed or its signal is unreliable, often disabling those safety features. Because it can disable collision-avoidance functions, it carries elevated importance. The exact definition should be confirmed against the specific vehicle.
Common Causes of C1A16
- •Obstructed radar sensor (snow, ice, mud, debris, emblem/badge)
- •Misaligned or knocked sensor bracket (often after a minor impact)
- •Damaged or faulty radar/distance sensor
- •Wiring or connector problems at the sensor
- •Aftermarket bumper covers or accessories blocking the sensor
- •Sensor not recalibrated after bumper/grille work
- •Driver-assistance control module fault
C1A16 on Infiniti by Model
Infiniti QX60(1 issue)
- Forward Collision Warning / Automatic Emergency Braking False Activation or Unexpected Braking2022-2025
Owners have reported unexpected forward collision warnings and abrupt braking events with no obvious obstacle ahead, especially in traffic, on curves, or near roadside objects. These complaints are tied to the QX60's ADAS sensor/camera interpretation rather than a conventional brake hardware fault. Sudden braking can create a rear-impact hazard and is one of the more serious owner-reported safety concerns on the current generation.
Looking for C1A16 on a different make?
View C1A16 across all makes →Frequently Asked Questions
What does C1A16 mean on Infiniti?▼
C1A16 stands for "Manufacturer-Specific Chassis Code (Nissan/Infiniti: Radar/Distance Sensor Obstruction or Misalignment)." C1A16 is a manufacturer-specific chassis code commonly seen on Nissan and Infiniti vehicles equipped with intelligent cruise control and forward-collision/automatic emergency braking, where it relates to the front radar/distance sensor being blocked, dirty, misaligned, or otherwise unable to function. The driver-assistance module monitors the radar and sets this code when the sensor's view is obstructed or its signal is unreliable, often disabling those safety features. Because it can disable collision-avoidance functions, it carries elevated importance. The exact definition should be confirmed against the specific vehicle. On Infiniti specifically, this code is documented across 1 model.
What causes C1A16 on Infiniti vehicles?▼
Common causes on Infiniti: Obstructed radar sensor (snow, ice, mud, debris, emblem/badge), Misaligned or knocked sensor bracket (often after a minor impact), Damaged or faulty radar/distance sensor, Wiring or connector problems at the sensor, Aftermarket bumper covers or accessories blocking the sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1A16 on a Infiniti?▼
Repair costs vary widely depending on the root cause and specific Infiniti model.
Which Infiniti models have C1A16 documented?▼
Au7o has documented C1A16 on 1 Infiniti model: QX60.