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.
2011 Acura RLFACTORY OEM SERVICE PROCEDURE
Adaptive Front Lighting DTCS
ADAPTIVE FRONT LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B2105 | Adaptive Front-Lighting Control Unit Lost Communication With Gauge Control Module (STEERING Message) |
| DTC B2106 | Adaptive Front-Lighting Control Unit Lost Communication With Gauge Control Module (A/T Message) |
| DTC B2107 | Adaptive Front-Lighting Control Unit Lost Communication With MICU (MICU Message) |
| DTC B2108 | Adaptive Front-Lighting Control Unit Lost Communication With Combination Switch Control Unit (HLSW Message) |
| DTC B2127 | Steering Angle Sensor Malfunction |
| DTC B2131 | Steering Angle Sensor Circuit Malfunction |
| DTC B2135 | A/T Reverse Signal Error |
| DTC B2136 | Left AFS Gearbox Motor Signal Error |
| DTC B2137 | Right AFS Gearbox Motor Signal Error |
| DTC B2139 | Headlight Leveling Motor Power Supply Circuit Error |
| DTC B2140 | Headlight Leveling Motor Signal Circuit Error |
| DTC B2141 | Suspension Stroke Sensor Output Error |
| DTC B2142 | Adaptive Front-Lighting Control Unit Sub CPU Communication Error (CPU Error) |
| DTC B2143 | Adaptive Front-Lighting Control Unit Sub CPU Memory Error (CPU Error) |
| DTC B2144 | Adaptive Front-Lighting Control Unit Sub CPU EEPROM Error |
| DTC B2145 | Left AFS Gearbox Motor Swing Error |
| DTC B2146 | Right AFS Gearbox Motor Swing Error |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.