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.
2007 Acura TL BaseFACTORY OEM SERVICE PROCEDURE
Multiplex Integrated Control DTCS
MULTIPLEX INTEGRATED CONTROL DIAGNOSTIC TROUBLE CODE (DTC) LIST INDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1000 | Communication Bus Line Error (BUS Off) |
| DTC B1050 | Communication Bus Line Error (BUS Off) |
| DTC B1100 | Communication Circuit Error (BUS Off) |
| DTC B1150 | Communication Bus Line Error (BUS Off) |
| DTC B1250 | Communication Bus Line Error (BUS Off) |
| DTC B1550 | Communication Bus Line Error (BUS Off) |
| DTC B1700 | Communication Bus Line Error (BUS Off) |
| DTC B1750 | Communication Bus Line Error (BUS Off) |
| DTC B1800 | Communication Bus Line Error (BUS Off) |
| DTC B2200 | B-CAN BUS OFF |
| DTC B1001; B1002 | Multiplex Integrated Control Unit (MICU) Internal Error (CPU Error); Multiplex Integrated Control Unit (MICU) Internal Error (EEPROM Error) |
| DTC B1102 | Door Multiplex Control Unit Internal Error |
| DTC B1005 | MICU Lost Communication with Relay Control Module |
| DTC B1006 | MICU Lost Communication with Door Multiplex Control Unit (Door Lock Switch Message) |
| DTC B1007 | MICU Lost Communication with Combination Switch Control Unit (Headlight Switch Message) |
| DTC B1008 | MICU Lost Communication with Gauge Control Module (A/T Message) |
| DTC B1010 | MICU Lost Communication with Door Multiplex Control Unit (Panic Message) |
| DTC B1011 | MICU Lost Communication with Gauge Control Module (VSP/NE Message) |
| DTC B1032 | MICU Lost Communication with the Gauge Control Module (CDS Message) |
| DTC B1080 | Power Supply Circuit (IG1 Line) Input Error for Relay Control Module and MICU |
| DTC B1255 | Combination Switch Control Unit Lost Communication With MICU |
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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