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.
2021 Mazda MX-5 Miata Club, Automatic TransFACTORY OEM SERVICE PROCEDURE
Multiplex Communication System DTCS: Ms-Can
MS-CAN DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Malfunction location | Reference for initial letter of DTC is capital U |
|---|---|---|
| U0010:88 | Unit communication error | (See DTC TABLE [INSTRUMENT CLUSTER] .) |
| U0232:00 | Communication error with blind spot monitoring (BSM) control module (LH) | |
| U0001:88 | Unit communication error | (See DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .) |
| U0100:00 | Communication error with PCM | |
| U0121:00 | Communication error with DSC HU/CM | |
| U0155:00 | Communication error with instrument cluster | |
| U0214:00 | Communication error with start stop unit | |
| U0010:88 | Unit communication error | (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]
.) (See DTC TABLE [CLIMATE CONTROL UNIT (MANUAL AIR CONDITIONER)] .) |
| U0155:00 | Communication error with instrument cluster |
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.