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 MANUALSACURA2023MDX BASEREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXNETWORK COMMUNICATION DTCS (BODY ELECTRICAL)MASTER LIGHTING CONTROL UNIT
2023 Acura MDX Base
Master Lighting Control Unit
2023 Acura MDX BaseSECTION Master Lighting Control Unit
| DTC | Description |
|---|---|
| DTC Troubleshooting: B214A | Master Lighting Control Unit Internal Failure |
| DTC Troubleshooting: B214B | Master Lighting Control Unit Internal Failure |
| DTC Troubleshooting: B214C | Master Lighting Control Unit Lost Communication With All Ambient Light on LIN |
| DTC Troubleshooting: B214D | Ambient Light Failure |
| DTC | Description |
|---|---|
| DTC Troubleshooting: B214E | Master Lighting Control Unit Lost Communication With Ambient Light on LIN |
| DTC Troubleshooting: U1280 (Master Lighting Control Unit) | Master Lighting Control Unit B-CAN Communication Error (BUS-OFF) |
| DTC Troubleshooting: U1281 (Master Lighting Control Unit) | Master Lighting Control Unit Lost Communication With MICU/BCM |
| DTC Troubleshooting: U128D (Master Lighting Control Unit) | Master Lighting Control Unit Lost Communication With Gauge Control Module |
RENDER: 1.0x
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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.