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.
DTC C1841-27
DTC C1841-27 : Differential Fluid Temperature Sensor Circuit Range/Performance Problem
NOTE: Before you troubleshoot, review the General Troubleshooting Information .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem |
DTC (Real Time AWD)
- DTC check
-1. Turn the vehicle to the ON mode.
-2. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1841-11 Differential Fluid Temperature Sensor Circuit Low Voltage C1841-13 Differential Fluid Temperature Sensor Circuit High Voltage C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem Is DTC C1841-11, C1841-13, or C1841-27 indicated?
DTC C1841-11 is indicated
Go to the DTC C1841-11 troubleshooting .
DTC C1841-13 is indicated
Go to the DTC C1841-13 troubleshooting .
DTC C1841-27 is indicated
Go to step 2.
- Problem verification
-1. Clear the DTC with the HDS.
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Enter the maintenance mode and start the engine , and let it idle for 1 minute.
-4. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem Is DTC C1841-27 indicated?
YES
The failure is duplicated. Go to step 3.
NO
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- Rear differential fluid temperature sensor check
-1. Check the parameter(s) below with the HDS. Make note of this value as it will be needed in the following steps.
Signal Current conditions Values Unit Voltage of the oil temperature sensor for rear differential -2. Turn the vehicle to the OFF (LOCK) mode.
-3. Turn the vehicle to the ON mode.
-4. Check the parameter(s) below with the HDS then compare with the value checked in step 3
Signal Current conditions Values Unit Voltage of the oil temperature sensor for rear differential Did the sensor value change?
YES
The rear differential fluid temperature sensor is OK. Check for an intermittent open or short in the TOH and/or TOL wires between the rear differential fluid temperature sensor and the AWD control unit, and recheck.
NO
NO RELATED
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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.