C1703: Right Rear Sensor Circuit Failure

Definition

The OBD2 code C1703 indicates a failure in the right rear sensor circuit, typically related to issues with the vehicle's stability control or anti-lock braking system

Common causes

Faulty right rear wheel speed sensor
Damaged wiring or connectors in the sensor circuit
Corrosion at the sensor connector
Poor ground connection
Faulty ABS control module
Wheel bearing issues affecting sensor operation
Interference from other electronic components or systems

Common misdiagnoses

Faulty wheel speed sensor
Damaged wiring or connectors
ABS control module issues
Incorrectly calibrated or malfunctioning ABS system
Brake system problems
Faulty ECM or PCM
Tire pressure issues
Wheel bearing problems

Troubleshooting steps

1. Visual Inspection
2. Check the wiring and connectors leading to the right rear wheel speed sensor for any signs of damage, corrosion, or loose connections
3. Inspect the sensor itself for physical damage or debris that may be obstructing it
4. Check Sensor Resistance
5. Disconnect the sensor connector and use a multimeter to measure the resistance of the sensor. Compare the reading to the manufacturer's specifications. If the resistance is out of range, the sensor may need to be replaced
6. Check Voltage Supply
7. With the sensor still disconnected, check for the proper voltage supply at the connector. You should see a voltage reading according to the vehicle's specifications. If there is no voltage, trace the wiring back to the control module to find the issue
8. Test the Sensor
9. If the sensor is still connected, use a multimeter to check the output voltage while the wheel is being turned. The voltage should change as the wheel turns. If it remains constant, the sensor may be faulty
10. Inspect the ABS Module
11. If the sensor and wiring appear to be in good condition, the issue may lie within the ABS control module. Check for any fault codes in the ABS module and consider reprogramming or replacing the module if necessary
12. Check for Other Codes
13. Scan the vehicle for any additional OBD-II codes that may provide more context or indicate related issues. Sometimes, multiple codes can point to a common problem
14. Clear Codes and Test Drive
15. After performing the above checks and repairs, clear the codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns
16. Consult Repair Manual
17. Refer to the vehicle's service manual for specific diagnostic procedures and specifications related to the right rear wheel speed sensor and its circuit
18. Professional Diagnosis
19. If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who has access to advanced diagnostic tools and equipment. By following these steps, you should be able to identify and resolve the issue related to the C1703 code

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Visual Inspection

2. Check the wiring and connectors leading to the right rear wheel speed sensor for any signs of damage, corrosion, or loose connections

3. Inspect the sensor itself for physical damage or debris that may be obstructing it

4. Check Sensor Resistance

5. Disconnect the sensor connector and use a multimeter to measure the resistance of the sensor. Compare the reading to the manufacturer's specifications. If the resistance is out of range, the sensor may need to be replaced

6. Check Voltage Supply

7. With the sensor still disconnected, check for the proper voltage supply at the connector. You should see a voltage reading according to the vehicle's specifications. If there is no voltage, trace the wiring back to the control module to find the issue

8. Test the Sensor

9. If the sensor is still connected, use a multimeter to check the output voltage while the wheel is being turned. The voltage should change as the wheel turns. If it remains constant, the sensor may be faulty

10. Inspect the ABS Module

11. If the sensor and wiring appear to be in good condition, the issue may lie within the ABS control module. Check for any fault codes in the ABS module and consider reprogramming or replacing the module if necessary

12. Check for Other Codes

13. Scan the vehicle for any additional OBD-II codes that may provide more context or indicate related issues. Sometimes, multiple codes can point to a common problem

14. Clear Codes and Test Drive

15. After performing the above checks and repairs, clear the codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns

16. Consult Repair Manual

17. Refer to the vehicle's service manual for specific diagnostic procedures and specifications related to the right rear wheel speed sensor and its circuit

18. Professional Diagnosis

19. If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who has access to advanced diagnostic tools and equipment. By following these steps, you should be able to identify and resolve the issue related to the C1703 code