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Mazda C0061

DSC HU/CM○ C1001:92 - FORWARD SENSING CAMERA (FSC)○ C1001:97 - FORWARD SENSING CAMERA (FSC)○ U300A:62 - ELECTRIC PARKING BRAKE (EPB)○ U3004:17 - ACC RELAY CIRCUIT MALFUNCTION○ U041

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceProfessional diagnosis is appropriate because the verified evidence concerns DLC-2 terminal condition, CAN-system behavior, battery discharge, and possible loss of diagnostic-tool communication. The supplied evidence does not establish whether service is mandatory for every C0061:54 occurrence.
Confidence95%

Quick answer

For Mazda vehicles covered by the listed official communications, DTC C0061:54 is identified as a DSC HU/CM code. Mazda service communications associate it with potential aftermarket-device effects at the DLC-2 diagnostic connector, including spread female terminals and CAN-system disruption. A vehicle-specific diagnosis is required.

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 C0061 mean?

For Mazda vehicles covered by the listed official communications, DTC C0061:54 is identified as a DSC HU/CM code. Mazda service communications associate it with potential aftermarket-device effects at the DLC-2 diagnostic connector, including spread female terminals and CAN-system disruption. A vehicle-specific diagnosis is required.

2. Technical explanation

Verified evidence identifies C0061:54 as a code reported by the DSC HU/CM (Dynamic Stability Control Hydraulic Unit/Control Module). Official Mazda communications list this code among multiple possible DTCs associated with an aftermarket device connected to the DLC-2 connector. The communications state that such a device may cause DLC-2 female terminals to spread open, may prevent IDS/MMDS communication because of a poor DLC-2 connection, may disrupt CAN-system battery-saver mode, and may be associated with battery discharge. The evidence does not establish that every occurrence of C0061:54 has this cause.

3. What system is affected?

DSC HU/CM. The verified Mazda communications also reference the DLC-2 diagnostic connector and CAN system in the described condition.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • C0061:54 may be stored in the DSC HU/CM.
  • IDS/MMDS may not communicate with the vehicle because of a poor DLC-2 connection.
  • Battery discharge is described in the official communications as a possible condition associated with the aftermarket-device scenario.
  • Not yet established by verified evidence whether any dashboard warnings, braking symptoms, stability-control symptoms, or driving changes occur specifically from C0061:54.

6. Possible causes

  • An aftermarket device connected to the DLC-2 connector may cause the DLC-2 female terminals to spread open.
  • An aftermarket device may disrupt CAN-system battery-saver mode.
  • The official communications describe these conditions in association with multiple DTCs, including C0061:54; they do not establish them as the cause of every C0061:54 occurrence.
  • Not yet established by verified evidence whether a DSC HU/CM fault, wiring fault, camera fault, brake-system fault, or other condition causes this code.

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

  • Do not perform high-voltage repairs based on this code.
  • If an aftermarket device is connected to the DLC-2 diagnostic connector, have a Mazda dealer or qualified service facility assess the vehicle and connector condition.
  • Provide the complete stored-DTC report to the servicing facility, because the official communications describe C0061:54 among multiple possible codes.
  • If battery discharge or scan-tool communication concerns are present, arrange professional diagnosis.

10. Step-by-step troubleshooting

  1. A qualified technician can determine whether an aftermarket device is connected to, or has affected, the DLC-2 connector.
  2. A qualified technician can assess DLC-2 connector terminal condition and diagnostic communication using Mazda-approved procedures.
  3. A complete vehicle scan can identify whether C0061:54 is accompanied by the other DTCs listed in the Mazda communications.
  4. Not yet established by verified evidence what additional diagnostic sequence applies to an isolated C0061:54.

11. When to contact service

Professional diagnosis is appropriate because the verified evidence concerns DLC-2 terminal condition, CAN-system behavior, battery discharge, and possible loss of diagnostic-tool communication. The supplied evidence does not establish whether service is mandatory for every C0061:54 occurrence.

12. What the service center may check

  • Check for an aftermarket device associated with the DLC-2 connector.
  • Assess whether DLC-2 female terminals have spread open.
  • Assess IDS/MMDS communication with the vehicle.
  • Review whether CAN-system battery-saver disruption or battery discharge is present.
  • Review all stored DTCs, including associated codes listed in the applicable Mazda communication.

13. Possible repair or resolution

  • The supplied evidence does not establish a specific repair for C0061:54.
  • Not yet established by verified evidence whether connector repair, module replacement, programming, calibration, or another repair resolves an individual C0061:54 event.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mazda SA-041-26, NHTSA Manufacturer Communication PDF 11034447, published June 19, 2026: lists C0061:54 in the DSC HU/CM among DTCs discussed in relation to aftermarket-device effects at DLC-2. https://static.nhtsa.gov/odi/tsbs/2026/MC-11034447-0001.pdf
  • Mazda SA-061-25, NHTSA Manufacturer Communication PDF 11026917, published December 17, 2025: lists C0061:54 in the DSC HU/CM among DTCs discussed in relation to aftermarket-device effects at DLC-2. https://static.nhtsa.gov/odi/tsbs/2026/MC-11026917-0001.pdf
  • Mazda SA-057-24, NHTSA Manufacturer Communication PDF 11007019, published August 15, 2024: lists C0061:54 in the DSC HU/CM among DTCs discussed in relation to aftermarket-device effects at DLC-2. https://static.nhtsa.gov/odi/tsbs/2024/MC-11007019-0001.pdf
  • Mazda SA-032-23a, NHTSA Manufacturer Communication PDF 10244679, published October 11, 2023: identifies aftermarket-device-related DLC-2 terminal spreading, potential CAN battery-saver disruption, battery discharge, and possible IDS/MMDS communication issues; lists C0061:54 among associated DTCs. https://static.nhtsa.gov/odi/tsbs/2023/MC-10244679-0001.pdf
  • Mazda SA-032-23, NHTSA Manufacturer Communication PDF 10237216, published May 24, 2023: identifies aftermarket-device-related DLC-2 terminal spreading, potential CAN battery-saver disruption, battery discharge, and possible IDS/MMDS communication issues; lists C0061:54 among associated DTCs. https://static.nhtsa.gov/odi/tsbs/2023/MC-10237216-0001.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official evidence consists of Mazda manufacturer communications published through NHTSA. Supplied applicability records identify US-market Mazda CX-70 model years 2022-2026, CX-90 model years 2022-2026, and MX-30 model years 2022-2026, with overlapping year ranges in the source data. Exact bulletin applicability, vehicle configuration, and VIN eligibility should be confirmed by a Mazda dealer using the vehicle VIN.

19. Frequently asked questions

What does Mazda DTC C0061:54 identify?

The verified communications identify C0061:54 as a DSC HU/CM code.

Is an aftermarket device a confirmed cause of every C0061:54?

No. Mazda communications associate an aftermarket device at the DLC-2 connector with a group of potential DTCs that includes C0061:54, but the evidence does not establish this as the cause of every occurrence.

Can C0061:54 be connected with a poor DLC-2 connection?

The official communications state that an aftermarket device may cause DLC-2 female terminals to spread open and that a poor DLC-2 connection may prevent IDS/MMDS communication. C0061:54 is listed among the DTCs in that communication context.

Is it safe to drive or charge with C0061:54?

Not yet established by verified evidence.

Are there any confirmed recalls for this code?

Not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Mazda C0061: DSC HU/CM○ C1001:92 - FORWARD SENSING CAMERA (FSC)○… | EV Diagnostics