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Mazda P1260

00 stored (Immobilizer system problem)• Rear View Monitor Display is Blurry• For concerns where the vehicle power supply cannot be controlled adequately, such as an engine no start

DriveNot yet established by verified evidence. If the vehicle cannot be reliably started or turned off, do not rely on normal operation; arrange Mazda service.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Mazda dealer promptly, especially for no-start, inability to turn off the engine, battery discharge, or relay buzzing. Provide the stored-code information and any associated symptoms.
Confidence95%

Quick answer

Mazda DTC P1260:00 is identified in verified Mazda/NHTSA communications as an immobilizer system problem. It has been reported with intermittent no-start or inability to turn the engine off, security/start-indicator warnings, battery discharge, relay buzzing, and a blurry rear-view monitor display.

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

Video guides

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DTC Mazda P1260 Short ExplanationMaxidot Mazda
DTC Buick P1260 Short ExplanationMaxidot Mazda

Videos are supporting material and never override OEM or regulator evidence.

1. What does P1260 mean?

Mazda DTC P1260:00 is identified in verified Mazda/NHTSA communications as an immobilizer system problem. It has been reported with intermittent no-start or inability to turn the engine off, security/start-indicator warnings, battery discharge, relay buzzing, and a blurry rear-view monitor display.

2. Technical explanation

Verified Mazda communications associate P1260:00 with an immobilizer-system problem. The supplied evidence also describes a condition involving reverse power supply from electronic devices with internal batteries connected to the vehicle through the USB port, which can prevent adequate control of vehicle power supply. The exact cause for an individual vehicle is not yet established by verified evidence without diagnosis.

3. What system is affected?

Immobilizer system and vehicle power-supply control. Related reported functions include starting/stopping, security indication, remote-transmitter communication, and rear-view monitor display.

4. How serious is this code?

Not yet established by verified evidence. However, the documented symptoms can include inability to start or turn off the engine and battery discharge, so prompt Mazda dealer assessment is appropriate.

5. Symptoms you may notice

  • DTC P1260:00 stored: immobilizer system problem.
  • Intermittent engine no-start or inability to turn the engine off.
  • Red security indicator light on in the instrument cluster.
  • Engine Start/Stop button amber indicator flashing.
  • Battery discharge.
  • Electrical relay buzzing noise.
  • Rear View Monitor display is blurry.
  • DTC B13D3:94 may also be stored: communication error with remote transmitter.
  • In one communication, key-transmitter control functions such as door locking/unlocking remained operational when buttons were pressed, while transmitter indicator lights were inoperative.

6. Possible causes

  • Mazda documentation describes reverse power supply from electronic devices with internal batteries connected through the vehicle USB port as a factor in concerns where vehicle power supply cannot be controlled adequately.
  • The exact root cause of P1260:00 on a particular vehicle is not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence. If the vehicle cannot be reliably started or turned off, do not rely on normal operation; arrange Mazda service.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • If an electronic device with an internal battery is connected through a USB port, disconnect it before seeking service; this is consistent with the reverse-power-supply condition described in Mazda documentation.
  • If the engine cannot be turned off, will not start, the battery is discharging, or relays are buzzing, contact Mazda service or roadside assistance.
  • Do not attempt high-voltage or immobilizer-system repairs yourself.

10. Step-by-step troubleshooting

  1. Record whether P1260:00 and B13D3:94 are stored and note any security-light, start-button, relay-noise, no-start, inability-to-turn-off, or blurry-camera symptoms.
  2. Check whether any USB-connected electronic device with an internal battery was present when the condition occurred, then disconnect it.
  3. Have a Mazda dealer inspect the vehicle using the applicable Mazda service information. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Contact an authorized Mazda dealer promptly, especially for no-start, inability to turn off the engine, battery discharge, or relay buzzing. Provide the stored-code information and any associated symptoms.

12. What the service center may check

  • Confirm stored DTCs, including P1260:00 and any accompanying B13D3:94.
  • Assess the reported immobilizer-system and vehicle power-supply-control concern using the applicable Mazda service communication.
  • Consider whether reverse power supply from a USB-connected electronic device with an internal battery is relevant to the reported event.

13. Possible repair or resolution

  • A specific repair resolution is not established by the supplied verified evidence. Mazda communications document the condition and reference reverse power supply from USB-connected devices with internal batteries; dealer diagnosis is required for an individual vehicle.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mazda SA-032-23a, NHTSA Manufacturer Communication 10244679, published 2023-10-11: Documents P1260:00 alongside possible no-start, inability to turn off, security/start-indicator warnings, battery discharge, relay buzzing, blurry rear-view monitor display, and B13D3:94. https://static.nhtsa.gov/odi/tsbs/2023/MC-10244679-0001.pdf
  • Mazda SA-057-24, NHTSA Manufacturer Communication 11007019, published 2024-08-15: Documents P1260:00 and the same group of reported symptoms. https://static.nhtsa.gov/odi/tsbs/2024/MC-11007019-0001.pdf
  • Mazda SA-004-25, NHTSA Manufacturer Communication 11013788, published 2025-01-22: Documents P1260:00 and B13D3:94, including inoperative transmitter indicator lights while transmitter control functions may operate. https://static.nhtsa.gov/odi/tsbs/2025/MC-11013788-0001.pdf
  • Mazda SA-004-25a, NHTSA Manufacturer Communication 11015003, published 2025-02-08: Documents P1260:00 and B13D3:94. https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11015003
  • Mazda SA-061-25, NHTSA Manufacturer Communication 11026917, published 2025-12-17: Documents P1260:00 and the reported symptoms including power-supply-control concerns. https://static.nhtsa.gov/odi/tsbs/2026/MC-11026917-0001.pdf
  • Mazda SA-041-26, NHTSA Manufacturer Communication 11034447, published 2026-06-19: Documents P1260:00 and the reported symptoms including power-supply-control concerns. https://static.nhtsa.gov/odi/tsbs/2026/MC-11034447-0001.pdf

16. Recall information

  • No recall information was supplied in the verified evidence.

17. Official manufacturer information

Verified applicability in the supplied database includes US-market Mazda CX-70 model years 2022-2026, CX-90 model years 2022-2026, and MX-30 model years 2022-2026. Overlapping applicability records are present; exact vehicle applicability should be confirmed by Mazda using the VIN.

19. Frequently asked questions

What does Mazda P1260:00 mean?

The verified Mazda/NHTSA evidence identifies P1260:00 as an immobilizer system problem.

Can P1260:00 cause a no-start condition?

Mazda communications list P1260:00 among stored codes that may be present with intermittent engine no-start or inability to turn the engine off. The code alone does not establish the cause of an individual no-start.

What is B13D3:94?

The supplied Mazda evidence identifies B13D3:94 as a communication error with the remote transmitter. It may be stored with P1260:00.

Could a USB-connected device be relevant?

Yes. Mazda documentation describes reverse power supply from electronic devices with internal batteries connected through the USB port in relation to inadequate vehicle power-supply control. Whether it caused a particular event requires diagnosis.

Is this an EV high-voltage battery fault?

Not yet established by verified evidence. The supplied documentation identifies an immobilizer and vehicle power-supply-control concern, not a high-voltage battery fault.

20. Sources & verification

ReferenceVerified
Mazda P1260: 00 stored (Immobilizer system problem)• Rear View Monitor… | EV Diagnostics