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C1858 Acura Code - Differential Fluid Pressure

- Code Popularity: 1,691 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1858 Acura?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Differential Solenoid Valve
  • Faulty Differential Fluid Pressure Sensor
  • Differential Fluid Pressure Sensor harness is open or shorted
  • Differential Fluid Pressure Sensor circuit poor electrical connection
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How to Fix the DTC C1858 Acura?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

DTC C1858-72: Differential Fluid Pressure Deviation Low
DTC C1858-73: Differential Fluid Pressure Deviation High

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1858 Acura code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1858 Acura Description

The AWD Control Unit monitors the Differential Fluid Pressure. The AWD Control Unit sets the OBDII code when the Differential Fluid Pressure is not to factory specifications.

OBDII Code C1858 Acura - Differential Fluid Pressure - AutoCodes.com
C1858 Acura Code - Differential Fluid Pressure

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Code C1858 Acura comments

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