The OBD code C1858 for Honda indicates an issue with the Differential Fluid Pressure Sensor circuit.
This affects the AntiLock Brake System (ABS) and can trigger the ABS Warning Light and Engine Light.
Common causes include a faulty Differential Solenoid Valve or Sensor, wiring issues, or poor connections.
It’s important to address this promptly to ensure proper ABS function.
A possible fix involves inspecting and repairing the sensor circuit and related components.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Honda c1858 OBD Code
The vehicle displays an ABS warning light on the dashboard with fault code Honda C1858.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible symptoms include issues with the vehicle’s ABS system, such as ABS not functioning properly.
- It may also lead to a decrease in braking performance.
Causes of the Honda c1858 OBD Code
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Possible triggers for Honda fault code C1858 include issues with the steering angle sensor.
- C1858 can be caused by a faulty Differential Solenoid Valve.
- A faulty Differential Fluid Pressure Sensor.
- An open or shorted Differential Fluid Pressure Sensor harness.
- A poor electrical connection in the Differential Fluid Pressure Sensor circuit.
Fixing Honda Error Code c1858 Step By Step
Resolve Honda C1858 by inspecting and repairing the brake pedal position sensor circuit as needed.
- To fix Honda OBDII code C1858, first, review the possible causes related to this code.
- Visually examine the wiring harness and connectors associated with the ABS control module.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, consider resetting the ABS control module using a diagnostic scan tool.
- Perform a software update on the ABS control module if necessary.
- Replace the ABS control module if all other steps fail to resolve the issue.
Cost Of Fixing Honda c1858 Fault Code
The repair for Honda fault code C1858 may involve replacing the steering angle sensor.
The cost to diagnose and fix Honda OBD code C1858 is based on an estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost will depend on the shop’s rates and the complexity of the repair.
Details of the Honda c1858 OBD Code
Honda fault code C1858 relates to a malfunction in the steering angle sensor circuit.
OBD code C1858 for Honda vehicles indicates an issue with the steering angle sensor circuit range/performance.
This code is triggered by the Electronic Control Unit (ECU) when it detects that the signal from the steering angle sensor is out of the expected range or not performing within specified parameters.
The steering angle sensor is a critical component of the vehicle’s stability control system, providing data on the steering wheel angle to help the ECU make decisions regarding vehicle stability and traction control.
When this sensor malfunctions or sends incorrect signals, it can trigger the C1858 fault code.
Mechanic’s Tech Notes
This section provides detailed information on diagnosing and repairing Honda fault code C1858.
OBDII code C1858 in a Honda typically indicates a problem with the Transmission Control Module (TCM).
To diagnose this, you can start by checking the TCM’s power and ground using a multimeter.
Next, use a scan tool to see if the TCM is communicating properly over the Controller Area Network (CAN) network.
If there are issues with communication, reflashing the TCM might be necessary.
Additionally, visually inspect the wiring harness and connectors for any damage, and ensure the connector pins are not broken, bent, pushed out, or corroded.
This thorough inspection can help pinpoint the root cause of the C1858 code.
FAQ
OBD code C1858 in a Honda indicates an issue with the Differential Fluid Pressure Sensor circuit. Check for faulty sensor, wiring, or connectors for repair.
Common symptoms for Honda OBD code C1858 include ABS warning light on, engine light on. Causes may be faulty solenoid valve or sensor. Inspect wiring and connectors for damage.
Diagnose OBD code C1858 in Honda: Symptoms ABS & Engine Light ON. Causes Faulty Differential Solenoid Valve, Fluid Pressure Sensor issues. Fix Inspect wiring, connectors, and components.
Wrap Up
If your Honda is displaying OBD code C1858 along with ABS or traction control warning lights, it may indicate a fault in the steering angle sensor circuit.
This could be caused by a malfunctioning steering angle sensor, damaged wiring, or poor connections in the system.
To address Honda OBD code C1858, start by inspecting the wiring harness and connectors related to the steering angle sensor.
Look for any signs of damage, corrosion, or loose connections.
Test the sensor itself for proper operation and replace if necessary to resolve the issue.
