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Nissan C1A17

49 OR C2580-49 STORED IN LASER/RADAR This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versio

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Nissan dealer or qualified Nissan service facility if C1A17-49 is CURRENT in LASER/RADAR, if warning lights are on, or if the code returns after being erased.
Confidence95%

Quick answer

For applicable U.S. Nissan LEAF vehicles, DTC C1A17-49 is addressed in Nissan laser/radar-related service bulletins. The required action depends on whether the code is stored as PAST or CURRENT in the LASER/RADAR system.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does C1A17 mean?

For applicable U.S. Nissan LEAF vehicles, DTC C1A17-49 is addressed in Nissan laser/radar-related service bulletins. The required action depends on whether the code is stored as PAST or CURRENT in the LASER/RADAR system.

2. Technical explanation

Verified Nissan bulletin evidence identifies C1A17-49 as a laser/radar-system diagnostic code. One Nissan bulletin describes it as “CONTROL UNIT (INTERNAL ELECTRONIC ERROR)” when it appears with C1B84-00, while later Nissan bulletins address C1A17-49 or C2580-49 stored in LASER/RADAR. The supplied evidence does not establish one universal repair for every occurrence of C1A17-49.

3. What system is affected?

LASER/RADAR system; related evidence also references the Distance Sensor and Automatic Emergency Braking (AEB) warning system.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Malfunction and Automatic Emergency Braking (AEB) warning lights ON are documented by Nissan bulletin NTB18-057 for a condition involving C1A17-49 and C1B84-00.
  • No other symptoms are established by the supplied verified evidence.

6. Possible causes

  • Nissan bulletin NTB18-057 labels C1A17-49 as “CONTROL UNIT (INTERNAL ELECTRONIC ERROR)” in its documented condition.
  • Not yet established by verified evidence whether this label represents the cause of every C1A17-49 occurrence.
  • For a CURRENT C1A17-49 or C2580-49 in LASER/RADAR, Nissan directs technicians to the applicable Electronic Service Manual (ESM); the supplied evidence does not provide the underlying cause.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Have the vehicle evaluated by a Nissan dealer or qualified service facility using the applicable Nissan diagnostic information.
  • Document whether C1A17-49 is listed in the LASER/RADAR system as PAST or CURRENT.
  • Do not replace parts solely because the code is stored as PAST; Nissan NTB21-106 states to erase the DTC and not replace any parts in that situation.

10. Step-by-step troubleshooting

  1. For C1A17-49 or C2580-49 stored in the LASER/RADAR system PAST column, Nissan NTB21-106 directs: erase the DTC and do not replace any parts.
  2. For C1A17-49 or C2580-49 stored in the LASER/RADAR system CURRENT column, Nissan NTB21-106 directs technicians to the applicable ESM for instructions.
  3. Nissan NTB18-057 documents a separate confirmed condition with Malfunction and AEB warning lights ON and DTCs C1B84-00 and C1A17-49; its listed action is installation of a new Distance Sensor and addition of a foam strip to that new sensor.

11. When to contact service

Contact a Nissan dealer or qualified Nissan service facility if C1A17-49 is CURRENT in LASER/RADAR, if warning lights are on, or if the code returns after being erased.

12. What the service center may check

  • Read LASER/RADAR DTC status and determine whether C1A17-49 is PAST or CURRENT.
  • Follow the applicable Nissan ESM when the code is CURRENT.
  • For the specific NTB18-057 confirmed condition, verify the documented Malfunction and AEB warnings and the presence of both C1B84-00 and C1A17-49 before applying that bulletin’s repair.

13. Possible repair or resolution

  • PAST C1A17-49 or C2580-49 in LASER/RADAR: erase the DTC; Nissan states not to replace parts.
  • CURRENT C1A17-49 or C2580-49 in LASER/RADAR: follow the applicable Nissan ESM.
  • For the NTB18-057 condition involving both C1B84-00 and C1A17-49 with Malfunction and AEB warnings on: install a new Distance Sensor and add a foam strip to the new Distance Sensor.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NTB21-106, published November 15, 2021: For C1A17-49 or C2580-49 in LASER/RADAR, erase PAST codes and do not replace parts; for CURRENT codes, refer to the applicable ESM.
  • NTB21-106A, published March 9, 2023: Amended version of the Nissan bulletin covering C1A17-49 or C2580-49 stored in LASER/RADAR.
  • NTB21-106B, published May 11, 2024: Amended version of the Nissan bulletin covering C1A17-49 or C2580-49 stored in LASER/RADAR.
  • NTB18-057, published August 7, 2018: For its specified condition with Malfunction and AEB warnings on and both C1B84-00 and C1A17-49 stored, Nissan specifies a new Distance Sensor and foam strip.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Nissan manufacturer communications: NTB21-106 (NHTSA communication 10206321), NTB21-106A (10234066), NTB21-106B (11004969), and NTB18-057 (10144520).

19. Frequently asked questions

What should be done if C1A17-49 is stored as PAST in LASER/RADAR?

Nissan NTB21-106 directs technicians to erase the DTC and not replace any parts.

What should be done if C1A17-49 is CURRENT in LASER/RADAR?

Nissan NTB21-106 directs technicians to refer to the applicable Electronic Service Manual.

Does C1A17-49 always require a new Distance Sensor?

No. The supplied evidence only specifies Distance Sensor replacement and a foam strip for the specific NTB18-057 condition involving Malfunction and AEB warning lights and both C1B84-00 and C1A17-49. For a PAST C1A17-49 or C2580-49 in LASER/RADAR, Nissan says not to replace parts.

Which vehicles are covered by the supplied applicability evidence?

The supplied applicability records identify U.S. Nissan LEAF model years 2018 through 2024, with overlapping records through 2023 and 2022. Exact bulletin applicability is not further established by the supplied evidence.

20. Sources & verification

Verified
Nissan C1A17: 49 OR C2580-49 STORED IN LASER/RADAR This bulletin has… | EV Diagnostics