OBD code C1504 indicates an issue with the Tire Pressure Monitoring System (TPMS).
Symptoms include the ABS and TPMS warning lights being illuminated.
This is commonly caused by a faulty tire pressure sensor, open or shorted sensor harness, or poor electrical connection.
While not a critical issue, it can affect vehicle safety.
To fix, inspect the sensor, harness, and connections for any damage or corrosion.
| 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 c1504 OBD Code
The vehicle displays a warning light indicating a communication error with the brake control module.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Tire Pressure Monitor System (TPMS) Warning Light ON.
Causes of the c1504 OBD Code
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Possible triggers for fault code C1504 include faulty wheel speed sensor or damaged wiring.
- C1504 can be caused by a Faulty Tire Pressure Sensor.
- A Tire Pressure Sensor harness that is open or shorted.
- A Tire Pressure Sensor circuit with a poor electrical connection.
Fixing Error Code c1504 Step By Step
Resolve fault code C1504 by inspecting and repairing the steering angle sensor circuit as needed.
- To fix OBDII code C1504, first, 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.
- Next, check the condition of the steering angle sensor and its wiring.
- Test the sensor’s output signal using a scan tool.
- If the sensor is faulty, replace it with a new one.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Finally, test drive the vehicle to ensure the code does not return, indicating a successful repair.
Cost Of Fixing c1504 Fault Code
Diagnosing and repairing fault code C1504 may involve inspecting and replacing the wheel speed sensor.
The cost to diagnose and fix OBD code C1504 is typically based on 1. 0 hour of labor, with rates ranging from $75 to $150 per hour.
The total cost will depend on the shop’s labor rates and the complexity of the repair needed.
Details of the c1504 OBD Code
Code C1504 relates to an issue with the brake switch circuit.
OBD code C1504 indicates an issue with the brake pedal switch circuit A.
This code is triggered by the body control module (BCM) when it detects a circuit malfunction in the brake pedal switch A.
The brake pedal switch A is part of the brake light circuit and is used to inform the BCM when the brake pedal is pressed.
When this switch fails or there is a circuit issue, the BCM will set code C1504. This code is related to the brake system and can affect the operation of brake lights and other safety systems tied to the brake pedal switch.
Mechanic’s Tech Notes
Code C1504 indicates an issue with the brake switch circuit in the vehicle’s electronic stability control system.
OBDII code C1504 relates to a transmission control module (TCM) malfunction.
To diagnose, check TCM power and ground using a multimeter.
Use a scan tool to confirm TCM communication over the Controller Area Network (CAN) network.
Visually inspect wiring harnesses and connectors for damage, and check connector pins for issues like breakage, bending, or corrosion.
If necessary, consider reprogramming the TCM.
This comprehensive approach will help pinpoint the root cause of the issue and guide you towards an effective repair.
FAQ
OBD code C1504 indicates an issue with the Tire Pressure Sensor circuit. Check for faulty sensor, wiring harness issues, or poor electrical connection. Inspect and repair as needed.
Common symptoms for OBD code C1504 include ABS and TPMS warning lights on. Causes may be faulty tire pressure sensor or related wiring issues. Inspect and repair as needed.
Diagnose OBD code C1504 by checking for faulty tire pressure sensor, open/shorted harness, or poor connection. Inspect wiring and connectors for damage or corrosion.
Wrap Up
If your ABS warning light is illuminated and you see OBDII code c1504, it may indicate a fault in the brake pressure sensor circuit.
This could be caused by a damaged sensor, faulty wiring, or poor electrical connections.
To address OBDII code c1504, start by inspecting the brake pressure sensor and its wiring harness for any visible damage.
Test the sensor’s electrical connections for proper voltage and continuity.
Replace the sensor if necessary and ensure all wiring connections are secure and free of corrosion.
