2021-2022 Nissan DTC C1A17-49 or C2580-49 TSB

Symptoms

Owners of affected 2021-2022 Nissan vehicles may notice a warning light or message related to the Forward Collision Avoidance system. While the specific message is not detailed in the bulletin, the presence of these Diagnostic Trouble Codes (DTCs) points to a potential malfunction within the LASER/RADAR module responsible for this safety feature.

Fault Codes / DTCs

This Technical Service Bulletin (TSB) specifically addresses the following diagnostic trouble codes:

• C1A17-49: Stored in LASER/RADAR module
• C2580-49: Stored in LASER/RADAR module

These codes are associated with the vehicle's Forward Collision Avoidance system, which relies on the LASER/RADAR module for operation.

Important Warnings

Nissan has issued specific instructions for technicians regarding these DTCs to prevent unnecessary repairs:

• If DTC C1A17-49 or C2580-49 is stored in the LASER/RADAR module in the “PAST” column, technicians are instructed to erase the DTC and DO NOT replace any parts. This is a critical point for owners, as it means a part replacement may not be necessary if the issue was transient.

Diagnosis and Repair Procedure Summary

When a 2021-2022 Nissan Sentra or other affected model presents with DTC C1A17-49 or C2580-49, the diagnostic approach depends on the status of the code:

• If the DTC is stored in the “PAST” column: The TSB instructs technicians to simply clear the code. No component replacement is required, as the issue is considered historical and not currently active.
• If the DTC is stored in the “CURRENT” column: For active faults, technicians must refer to the applicable Electronic Service Manual (ESM) for detailed diagnostic and repair instructions. This indicates an ongoing problem that requires further investigation and potential repair according to standard procedures.

Owner Action

If you own a 2021-2022 Nissan vehicle and experience a warning light related to your Forward Collision Avoidance system, or if you suspect an issue with your LASER/RADAR module, it is recommended to visit an authorized Nissan dealership. Inform them about the potential for DTC C1A17-49 or C2580-49.

Be aware of the guidance provided in this TSB, especially the instruction for the Nissan Sentra C1A17-49 or C2580-49 codes being in the 'PAST' column. This information can help ensure that your vehicle receives the correct diagnosis and avoids unnecessary part replacements. Your dealer will be able to check the status of the DTCs and perform the appropriate action as outlined by Nissan.

Source: NHTSA Manufacturer Communication 10206321