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.
2022 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE
CAN Communication
CAN COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Refer to |
|---|---|
| U0073:88 | (See DTC U0073:88 (BCM) .) |
| U0075:88 | (See DTC U0075:88 (BCM) .) |
| U0076:88 | (See DTC U0076:88 (BCM) .) |
| U0079:88 | (See DTC U0079:88 (BCM) .) |
| U007A:88 | (See DTC U007A:88 (BCM) .) |
| U007D:88 | (See DTC U007D:88 (BCM) .) |
| U0100:00 | (See DTC U0100:00 (BCM) .) |
| U0101:00 | (See DTC U0101:00 (BCM) .) |
| U0115:00 | (See DTC U0115:00 (BCM) .) |
| U0121:00 | (See DTC U0121:00 (BCM) .) |
| U0121:87 | (See DTC U0121:87 (BCM) .) |
| U0126:00 | (See DTC U0126:00 (BCM) .) |
| U0131:00 | (See DTC U0131:00 (BCM) .) |
| U0151:00 | (See DTC U0151:00 (BCM) .) |
| U0155:00 | (See DTC U0155:00 (BCM) .) |
| U0156:00 | (See DTC U0156:00 (BCM) .) |
| U0158:00 | (See DTC U0158:00 (BCM) .) |
| U0164:00 | (See DTC U0164:00 (BCM) .) |
| U0182:00 | (See DTC U0182:00 (BCM) .) |
| U0301:82 | (See DTC U0301:82 (BCM) .) |
| U0316:82 | (See DTC U0316:82 (BCM) .) |
| U031A:82 | (See DTC U031A:82 (BCM) .) |
| U0320:82 | (See DTC U0320:82 (BCM) .) |
| U0323:82 | (See DTC U0323:82 (BCM) .) |
| U0328:82 | (See DTC U0328:82 (BCM) .) |
| U0336:82 | (See DTC U0336:82 (BCM) .) |
| U0339:82 | (See DTC U0339:82 (BCM).) |
| U2121:49 | (See DTC U2121:49 (BCM) .) |
| U212A:00 | (See DTC U212A:00 (BCM) .) |
| U212C:00 | (See DTC U212C:00 (BCM) .) |
| U212D:00 | (See DTC U212D:00 (BCM) .) |
| U212E:00 | (See DTC U212E:00 (BCM) .) |
| U2131:00 | (See DTC U2131:00 (BCM) .) |
| U2133:00 | (See DTC U2133:00 (BCM) .) |
| U213A:00 | (See DTC U213A:00 (BCM) .) |
| U213B:00 | (See DTC U213B:00 (BCM) .) |
| U213C:00 | (See DTC U213C:00 (BCM) .) |
| U3000:88 | (See DTC U3000:88 (BCM) .) |
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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