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.
Keyless Access Power Control Unit (Body Control Module)
2023 Acura MDX BaseSECTION Keyless Access Power Control Unit (Body Control Module)
| DTC | Description |
|---|---|
| DTC Troubleshooting: B12C5 | Engine Start/Stop Switch Failure |
| DTC Troubleshooting: B12D0 | Power Control Unit IG1A Circuit Error |
| DTC Troubleshooting: B12D1 | Power Control Unit IG1B Circuit Error |
| DTC Troubleshooting: B12D2 | Power Control Unit IG2 Circuit Error |
| DTC Troubleshooting: B12D3 | Power Control Unit IG Latch Circuit Error |
| DTC Troubleshooting: B12E5 | Electric Steering Lock Connection constitution is abnormal |
| DTC Troubleshooting: B12F3 | BCM lost communication with transmission control unit |
| DTC Troubleshooting: U0073 (Keyless Access Power Control Unit) | F-CAN communication bus line error (BUS-OFF) |
| DTC Troubleshooting: U0100 (Keyless Access Power Control Unit) | BCM lost communication with ECM/PCM |
| DTC Troubleshooting: U0122 (Keyless Access Power Control Unit) | BCM lost communication with VSA/ABS |
| DTC Troubleshooting: U1280 (Keyless Access Power Control Unit) | B-CAN communication bus line error (BUS-OFF) |
| DTC Troubleshooting: U1281 (Keyless Access Power Control Unit) | BCM lost communication with BCM/MICU |
| DTC Troubleshooting: U128D (Keyless Access Power Control Unit) | BCM lost communication with gauge control module |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.