Differential Fluid Pressure Sensor Circuit
Table of contents
C1840 HONDA Possible Causes
- Faulty Differential Fluid Pressure Sensor
- Differential Fluid Pressure Sensor harness is open or shorted
- Differential Fluid Pressure Sensor circuit poor electrical connection
How do I fix code C1840 HONDA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- DTC C1840-12: Differential Fluid Pressure Sensor Circuit High Voltage
- DTC C1840-14: Differential Fluid Pressure Sensor Circuit Low Voltage
Cost of diagnosing the C1840 HONDA code
The cost of diagnosing the C1840 HONDA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1840 HONDA Description
The AWD Control Unit monitors the Differential Fluid Pressure Sensor. The AWD Control Unit sets the OBDII code when the Differential Fluid Pressure Sensor is not to factory specifications.