Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 645 (ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM))DTC TABLE (IMMOBILIZER SYSTEM)
2008 Mazda 6 s Sport, 4D Hatchback, Standard
DTC Table (Immobilizer System)
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION DTC Table (Immobilizer System)
WARNING: This page is about a different car, the 2008 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
DTC TABLE (IMMOBILIZER SYSTEM)
| DTC | Detection condition | |||||
|---|---|---|---|---|---|---|
| Security light flashing pattern | M-MDS(1) | |||||
| Keyless control module | PCM | |||||
| 11 | DTC B1681 | DTC P1260 | No detected communication with the coil | |||
| 12 | DTC B2103 | DTC P1260 | Coil malfunction | |||
| 13 | DTC B1600 | DTC P1260 | The key ID number data cannot be read. | |||
| DTC B2431 | DTC P1260 | Key ID number registration error | ||||
| 14 | DTC B1602 | DTC P1260 | The keyless control module cannot read key ID number data normally. | |||
| 15 | DTC B1601 | DTC P1260 | The keyless control module has detected unregistered key ID number. | |||
| 16 | DTC U2510 | DTC P1260 | Communication error between the keyless control module and the PCM (no response) | |||
| DTC U1147 | DTC P1260 | Communication error between the keyless control module and the PCM (mismatched conditions) | ||||
| 21 | DTC B1213 | DTC P1260 | Only one key ID number is registered. | |||
| 22 | DTC B2141 | DTC P1260 | Communication error between the keyless control module and the PCM (data transfer error) | |||
| 23 | DTC B2139 | DTC P1260 | ID number data in the PCM and the keyless control module do not match. | |||
| Not illuminated | DTC B1342 | - | Keyless control module malfunction | |||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.