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 MANUALSACURA2015RDX AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXAWD SYSTEM DTCS
2015 Acura RDX AWD
AWD System DTCS
2015 Acura RDX AWDSECTION AWD System DTCS
AWD SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) INDENTIFICATION
| DTC | Description |
|---|---|
| C1840-12 | Differential Fluid Pressure Sensor Circuit High Voltage (2013-18) |
| C1840-14 | Differential Fluid Pressure Sensor Circuit Low Voltage (2013-18) |
| C1841-11 | Differential Fluid Temperature Sensor Circuit Low Voltage (2013-18) |
| C1841-13 | Differential Fluid Temperature Sensor Circuit High Voltage (2013-18) |
| C1841-27 | Differential Fluid Temperature Sensor Circuit Range/Performance Problem (2013-18) |
| C1850-12 | Fail Safe Relay Stuck ON (2013-15) |
| C1850-12 | Fail Safe Relay Stuck ON (2016-18) |
| C1850-14 | Fail Safe Relay Stuck OFF (2013-15) |
| C1850-14 | Fail Safe Relay Stuck OFF (2016-18) |
| C1851-18 | Motor Circuit Low Current (2013-18) |
| C1851-19 | Control Module Internal Control Module Malfunction (2013-18) |
| C1851-1E | Motor Circuit High Current (2013-18) |
| C1852-18 | Solenoid Valve Circuit Low Current (2013-18) |
| C1852-19 | Solenoid Valve Circuit High Current (2013-18) |
| C1858-72 | Differential Fluid Pressure Deviation Low (2013-18) |
| C1858-73 | Differential Fluid Pressure Deviation High (2013-18) |
| C1860-98 | Differential Fluid Overheated (2013-18) |
| C1861-9A | Vehicle Spin Detected (2013-18) |
| C1870-00 | Related Malfunctions (2013-18) |
| C1873-00 | Steering Angle Sensor Malfunction (2013-18) |
| U0100-00 | F-CAN Malfunction (2013-15) |
| U0100-00 | F-CAN Malfunction (2016-18) |
| U3000-49 | Control Module Internal Control Module Malfunction (2013-18) |
| U3000-51 | Control Module Programming Error (2013-18) |
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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.