OBD code C0039 indicates a fault with the right rear tone wheel in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
The issue is commonly caused by a faulty tone wheel.
It is a moderate concern that should be addressed promptly.
To fix it, inspect the tone wheel, wiring harness, and connectors 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) |
Symptoms of the c0039 OBD Code
The vehicle displays an ABS warning light on the dashboard with fault code C0039 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 during braking.
- Unusual noises from the ABS system.
Causes of the c0039 OBD Code
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Possible triggers for fault code C0039 include issues with the wheel speed sensor or wiring.
- C0039 can be caused by a faulty right rear tone wheel
Fixing Error Code c0039 Step By Step
To resolve fault code C0039, inspect the wheel speed sensor and related wiring for issues.
- To fix OBDII code C0039, first, review the possible causes related to the ABS module and wheel speed sensor circuits.
- Visually examine the wiring harness and connectors for any visible damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- Test the wheel speed sensors for proper operation and signal output.
- Replace any faulty wheel speed sensors or repair damaged wiring as necessary.
- Clear the fault codes and test drive the vehicle to ensure the issue has been resolved.
Cost Of Fixing c0039 Fault Code
The repair for fault code C0039 typically involves replacing the right rear wheel speed sensor.
The cost to diagnose and fix OBD code C0039 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Costs depend on labor rates, shop fees, and the complexity of the repair needed.
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Details of the c0039 OBD Code
Code C0039 indicates a problem with the right rear wheel speed sensor circuit.
OBD code C0039 means that the right rear wheel speed sensor circuit has a malfunction.
This code is triggered by the Electronic Brake Control Module (EBCM) when it detects an issue with the signal from the right rear wheel speed sensor.
The wheel speed sensors are crucial for the proper functioning of the vehicle’s ABS system, traction control system, and stability control system.
When the EBCM detects a fault with the right rear wheel speed sensor circuit, it can affect the vehicle’s ability to control braking and stability in certain driving conditions.
Mechanic’s Tech Notes
Code C0039 indicates an issue with the right rear wheel speed sensor circuit.
OBDII code C0039 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.
Additionally, use a scan tool to confirm if the TCM communicates properly over the Controller Area Network (CAN) network.
If the TCM does not respond, reprogramming or reflashing it may be necessary.
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 C0039 fault code.
FAQ
OBD code C0039 indicates a faulty right rear tone wheel. Symptoms include ABS and engine warning lights. Inspect wiring harness, connectors, and tone wheel for damage.
Common symptoms for OBD code C0039 include ABS warning light on, engine light on. Possible cause is a faulty right rear tone wheel. Fix: Inspect wiring harness and connectors.
Diagnose OBD code C0039 by checking the right rear tone wheel for faults. Inspect wiring harness, connectors, and pins for damage or corrosion.

Wrap Up
If your ABS warning light is illuminated and you retrieve OBDII code c0039, it may indicate a fault in the right rear wheel speed sensor circuit.
This could be caused by a damaged wheel speed sensor, faulty wiring connections, or a corroded connector.
To address OBDII code c0039, begin by inspecting the wiring harness and connectors related to the right rear wheel speed 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.