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 MDXFACTORY OEM SERVICE PROCEDURE
DTC Troubleshooting: Notes
DTC INDEX
| DTC | Description |
|---|---|
| DTC B1802 | Power Seat Control Unit Internal Error (EEPROM error) |
| DTC B1805 | Power Seat Control Unit Lost Communication with Gauge Control Module (VSP/NE Message); DTC B1808: Power Seat Control Unit Lost Communication with Gauge Control Module (A/T Message) |
| DTC B1806 | Power Seat Control Unit Lost Communication with MICU (MICU Message); DTC B1810: Power Seat Control Unit Lost Communication with MICU (MIRRORSW Message); DTC B1811: Power Seat Control Unit Lost Communication with MICU (DOORSW Message) |
| DTC B1812 | Power Seat Control Unit Lost Communication with Driver's MPCS Unit (MEMSW Message) |
| DTC B1825 | Power Seat Slide Motor Pulse Error |
| DTC B1826 | Power Seat Front Up-down Motor Pulse Error |
| DTC B1827 | Power Seat Rear Up-down Motor Pulse Error |
| DTC B1828 | Power Seat Recline Motor Pulse Error |
| DTC B1829 | A/T P Signal and VSS Signal Mismatch |
| DTC B1835 | Power Tilt/Telescopic Steering Switch Signal Input Error |
| DTC B1836 | Power Seat Position Sensor Circuit Short |
| DTC B1837 | Driving Position Memory Recall Timeout |
| DTC B1840 | Tilt Motor Pulse Error |
| DTC B1841 | Telescopic Motor Pulse Error |
| DTC B1842 | Power Tilt/Telescopic Position Sensor Power Supply Circuit (SVCC Line) Short |
| DTC B1843 | Power Seat Control Unit Lost Communication with Power Tilt/Telescopic Steering Control Unit (UART line) |
| DTC B1844 | Power Seat Slide Switch Circuit Malfunction |
| DTC B1845 | Power Seat Recline Switch Circuit Malfunction |
| DTC B1846 | Power Seat Front Up-Down Switch Circuit Malfunction |
| DTC B1847 | Power Seat Rear Up-Down Switch Circuit Malfunction |
| DTC B2182 | Left Power Mirror Horizontal Sensor Signal Error |
| DTC B2183 | Left Power Mirror Vertical Sensor Signal Error |
| DTC B2184 | Right Power Mirror Horizontal Sensor Signal Error |
| DTC B2185 | Right Power Mirror Vertical Sensor Signal Error |
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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