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Mazda B13D3

94 stored (Communication error with remote transmitter)• DTC P1260:00 stored (Immobilizer system problem)• Rear View Monitor Display is Blurry• For concerns where the vehicle power

DriveNot yet established by verified evidence. The supplied bulletin evidence includes possible no-start and inability-to-turn-off conditions, but does not provide a general driveability determination.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Mazda dealer or qualified service provider, particularly for no-start, inability-to-turn-off, battery-discharge, immobilizer, or remote-transmitter-function concerns.
Confidence95%

Quick answer

B13D3:94 is identified in Mazda manufacturer communications as “Communication error with remote transmitter.” It has been reported together with P1260:00 (immobilizer system problem) in specified U.S. Mazda CX-70, CX-90, and MX-30 model-year ranges.

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 B13D3 mean?

B13D3:94 is identified in Mazda manufacturer communications as “Communication error with remote transmitter.” It has been reported together with P1260:00 (immobilizer system problem) in specified U.S. Mazda CX-70, CX-90, and MX-30 model-year ranges.

2. Technical explanation

Verified Mazda communications describe B13D3:94 as a communication error with the remote transmitter. One official bulletin states that key-fob proximity to a cell phone may cause issues with the START/STOP button or rear-view camera; the provided evidence does not establish that this is the only cause in every case.

3. What system is affected?

Remote transmitter/keyless-entry and immobilizer-related vehicle functions. The supplied evidence also associates the condition with START/STOP-button and rear-view-monitor concerns.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • B13D3:94 stored: Communication error with remote transmitter.
  • P1260:00 may be stored: Immobilizer system problem.
  • Intermittent engine no-start or inability to turn the engine off.
  • Red security indicator light illuminated in the instrument cluster.
  • Engine Start/Start Button amber indicator flashing.
  • Battery discharge.
  • Electrical relay buzzing noise.
  • Rear View Monitor display may be blurry.
  • Door-handle lock/unlock touch sensor may be inoperative.
  • Key-transmitter indicator lights may be inoperative.
  • Key-transmitter control functions may be affected.

6. Possible causes

  • A Mazda manufacturer communication states that key-fob proximity to a cell phone may cause issues with the START/STOP button or rear-view camera.
  • Other causes are not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence. The supplied bulletin evidence includes possible no-start and inability-to-turn-off conditions, but does not provide a general driveability determination.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Keep the key fob away from a cell phone when evaluating a related START/STOP-button or rear-view-camera concern, as described in the Mazda communication.
  • If the vehicle will not start or cannot be turned off, contact an authorized Mazda dealer or qualified service provider.
  • Do not attempt high-voltage-system repairs based on this code.

10. Step-by-step troubleshooting

  1. Confirm whether B13D3:94 and P1260:00 are stored.
  2. Document associated symptoms, including security-indicator status, Start/Start Button amber flashing, key-transmitter operation, touch-sensor operation, relay buzzing, battery discharge, and rear-view-monitor image quality.
  3. Check the applicable Mazda manufacturer communications for the vehicle’s exact model year and configuration.
  4. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Contact an authorized Mazda dealer or qualified service provider, particularly for no-start, inability-to-turn-off, battery-discharge, immobilizer, or remote-transmitter-function concerns.

12. What the service center may check

  • Retrieve and confirm B13D3:94 and any accompanying P1260:00.
  • Assess the reported remote-transmitter, immobilizer, START/STOP-button, touch-sensor, security-indicator, relay-noise, battery-discharge, and rear-view-monitor symptoms.
  • Apply the diagnostic and repair procedures in the applicable Mazda service bulletin. Specific procedures are not included in the supplied evidence.

13. Possible repair or resolution

  • A specific repair resolution is not established by the supplied verified evidence.
  • Mazda manufacturer communications SA-004-25/SA-004-25a, SA-032-23a, SA-057-24, SA-061-25, and SA-041-26 are associated with the supplied evidence and should be reviewed for exact vehicle applicability and procedures.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mazda SA-032-23a, NHTSA Manufacturer Communication 10244679, published October 11, 2023.
  • Mazda SA-057-24, NHTSA Manufacturer Communication 11007019, published August 15, 2024.
  • Mazda SA-004-25, NHTSA Manufacturer Communication 11013788, published January 22, 2025.
  • Mazda SA-004-25a, NHTSA Manufacturer Communication 11015003, published February 8, 2025.
  • Mazda SA-061-25, NHTSA Manufacturer Communication 11026917, published December 17, 2025.
  • Mazda SA-041-26, NHTSA Manufacturer Communication 11034447, published June 19, 2026.

16. Recall information

  • No recall information is established by the supplied verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Mazda communications are supplied for this diagnostic. Refer to the listed communications using the provided NHTSA document identifiers and confirm applicability by VIN with Mazda or an authorized dealer.

19. Frequently asked questions

What does Mazda code B13D3:94 mean?

The supplied Mazda manufacturer communications identify B13D3:94 as “Communication error with remote transmitter.”

Can B13D3:94 occur with P1260:00?

Yes. The supplied Mazda communications state that B13D3:94 may be stored with P1260:00, identified as an immobilizer system problem.

Can a cell phone near the key fob be relevant?

One supplied Mazda communication states that key-fob proximity to a cell phone may cause issues with the START/STOP button or rear-view camera. It does not establish this as the cause of every B13D3:94 event.

Which vehicles are covered by the supplied applicability data?

The supplied data lists U.S. Mazda CX-70 model years 2022–2026, CX-90 model years 2022–2026, and MX-30 model years 2022–2026, with overlapping year ranges from multiple records. Exact bulletin applicability should be confirmed by VIN.

20. Sources & verification

Verified
Mazda B13D3: 94 stored (Communication error with remote transmitter)•… | EV Diagnostics