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.
2007 Mazda 6 MazdaspeedFACTORY OEM SERVICE PROCEDURE
Advanced Keyless System
ADVANCED KEYLESS SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B1342 | Keyless control module internal malfunction |
| B1134 | Unprogrammed card key |
| B2477 | Configuration error |
| B1317 | Keyless control module power supply voltage increases. |
| B1318 | Keyless control module power supply voltage decreases |
| B2170 | Push switch (Steering lock unit) |
| B1126 | Steering lock unit internal malfunction |
| U0236 | Steering lock unit communication system |
| B1093 | Steering lock unit communication error |
| B1093 | Keyless receiver |
| B1133 | Keyless antenna (Driver's door) |
| B1132 | Keyless antenna (Front passenger door) |
| B1127 | Keyless antenna (Interior, rear) |
| B1131 | Keyless antenna (exterior, rear) |
| B1129 | Keyless antenna (Interior, middle) |
| B112A | Keyless antenna (Interior, front) |
| U0323 | Communication error to instrument cluster |
| U0100 | Communication error to PCM |
| U0140 | Communication error to BCM |
| U0073 | Control module communication error |
| U2023 | Error signal from CAN related module |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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