OBD code C1556 indicates an issue with the Ride Height Air Pressure Sensor circuit in the Air Suspension Control Module (ASCM).
Symptoms include the ABS and Engine warning lights being illuminated.
This is usually caused by a faulty sensor, wiring harness issues, or a malfunctioning ASCM.
It is a moderate issue that should be addressed promptly.
To fix it, inspect and repair any damaged components or wiring connections related to the sensor circuit.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the c1556 OBD Code
The vehicle displays an ABS warning light on the dashboard with fault code C1556 stored.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of ABS functionality.
- Brake pedal may feel different than usual.
- Unusual noises coming from the ABS system.
Causes of the c1556 OBD Code
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Possible triggers for fault code C1556 include issues with the steering angle sensor or related components.
- Causes: Faulty Ride Height Air Pressure Sensor.
- Ride Height Air Pressure Sensor harness is open or shorted.
- Ride Height Air Pressure Sensor circuit poor electrical connection.
- Faulty Air Suspension Control Module (ASCM).
Fixing Error Code c1556 Step By Step
Resolve fault code C1556 by inspecting and repairing the steering angle sensor circuit as needed.
- To fix OBDII code C1556, first, review the possible causes related to this fault code.
- Visually inspect the wiring harness and connectors associated with the ABS system.
- Check for any damaged components or signs of wear.
- Inspect the connector pins for any issues like being broken, bent, pushed out, or corroded.
- Repair or replace any damaged wiring or connectors as necessary.
- Clear the fault code using a scan tool and test drive the vehicle to verify if the issue has been resolved.
- If the code returns, further diagnostics may be required to pinpoint the exact cause of the C1556 fault code.
Cost Of Fixing c1556 Fault Code
Diagnosing and repairing fault code C1556 may involve inspecting and testing the vehicle’s steering angle sensor system.
The cost to diagnose and fix OBD code C1556 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.
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Details of the c1556 OBD Code
Code C1556 indicates an issue with the steering angle sensor calibration in the vehicle.
OBD code C1556 means Steering Angle Sensor Internal fault.
This code is triggered by the Electronic Stability Control (ESC) module when it detects an internal fault within the steering angle sensor.
The steering angle sensor is a critical component of the ESC system, providing information about the steering wheel angle to help the system determine the vehicle’s intended direction.
When the sensor malfunctions or reports implausible data, the ESC module sets code C1556 to indicate an issue with the steering angle sensor.
Mechanic’s Tech Notes
Code C1556 indicates an issue with the steering angle sensor calibration on the vehicle.
OBDII code C1556 typically indicates a problem with the transmission control module (TCM).
To diagnose this issue, you can start by checking the TCM power and ground using a multimeter.
Ensure proper voltage levels are present.
Use a scan tool to communicate with the TCM over the Controller Area Network (CAN) network.
If the TCM does not respond, there may be a communication fault.
Visually inspect the wiring harness and connectors for any damage, and check for broken, bent, or corroded pins.
Reflashing the TCM software may be necessary to resolve the issue.
FAQ
OBD code C1556 indicates an issue with the Ride Height Air Pressure Sensor in the vehicle’s Air Suspension System. Check sensor, harness, and connections for faults.
Common symptoms for OBD code C1556 include ABS Warning Light ON, Engine Light ON. Causes may be faulty Ride Height Air Pressure Sensor or ASCM. Fix: Inspect wiring and connectors.
Diagnose and repair OBD code C1556 by checking the ride height air pressure sensor, its harness, and connections for faults. Inspect wiring for damage or poor connections.
Wrap Up
If your ABS warning light is illuminated and you retrieve OBDII code c1556, it may indicate a fault with the steering angle sensor.
This could be caused by a malfunctioning sensor, damaged wiring, or poor electrical connections in the steering angle sensor circuit.
To address OBDII code c1556, begin by inspecting the wiring harness and connectors related to the steering angle sensor.
Look for any signs of wear, corrosion, or damage.
Test the sensor itself for proper operation and replace it if necessary to resolve the issue.
