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.
2013 Mazda MX-5 Miata Grand Touring, Automatic TransFACTORY OEM SERVICE PROCEDURE
Advanced Keyless And Start System DTCS
ADVANCED KEYLESS AND START SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1093 | Steering lock unit communication error | (See DTC B1093 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B112A | Keyless antenna (INSTRUMENT PANEL) | (See DTC B112A [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1126 | Steering lock unit internal malfunction | (See DTC B1126 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1127 | Keyless antenna (trunk) | (See DTC B1127 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1128 | Keyless antenna (rear No. 2) | (See DTC B1128 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1129 | Keyless antenna (CENTER) | (See DTC B1129 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1131 | Keyless antenna (rear) | (See DTC B1131 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1132 | Keyless antenna (LH) | (See DTC B1132 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1133 | Keyless antenna (RH) | (See DTC B1133 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1134 | Unprogrammed advanced key | (See DTC B1134 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1317 | Keyless control module power supply voltage increases. | (See DTC B1317/B1318 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1318 | Keyless control module power supply voltage decreases | (See DTC B1317/B1318 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B1342 | Keyless control module internal malfunction | (See DTC B1342 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B2170 | Push switch (Steering lock unit) | (See DTC B2170 [ADVANCED KEYLESS AND START SYSTEM] ) |
| B2477 | Configuration error | (See DTC B2477 [ADVANCED KEYLESS AND START SYSTEM] ) |
| U0073 | Control module communication error | (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] ) |
| U0100 | Communication error to PCM | (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] ) |
| U0207 | Communication error to power retractable hardtop control module | (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] ) |
| U0214 | Keyless receiver | (See DTC U0214 [ADVANCED KEYLESS AND START SYSTEM] ) |
| U0236 | Steering lock unit communication system | (See DTC U0236 [ADVANCED KEYLESS AND START SYSTEM] ) |
| U0323 | Communication error to instrument cluster | (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] ) |
| U2023 | Error signal from CAN related module | (See DTC U2023 [ADVANCED KEYLESS AND START SYSTEM] ) |
Factory Service Tools
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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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