C0045:04 Code - Left Rear Wheel Speed Sensor Circuit Open
Quick Answer
The wheel speeds are detected by active Wheel Speed Sensors (WSS) and encoder rings. Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C0045:04 indicates Left Rear Wheel Speed Sensor Circuit Open.
- Common causes
- Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C0045:04 Description
What are the Possible Causes of the DTC C0045:04?
- Faulty Left Rear Wheel Speed Sensor
- Left Rear Wheel Speed Sensor harness is open or shorted
- Left Rear Wheel Speed Sensor circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM)
How to Fix the DTC C0045:04?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0045:04 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C0045:04 Code
1. What are the common symptoms of OBDII code C0045:04 (Left Rear Wheel Speed Sensor Circuit Open)?
The common symptoms include the ABS light coming on in the dashboard, traction control system malfunction, and possible loss of stability control.
2. What does the OBDII code C0045:04 indicate about the left rear wheel speed sensor circuit?
This code indicates an open circuit issue with the left rear wheel speed sensor, meaning there is a break or interruption in the electrical connection.
3. What are the possible causes of OBDII code C0045:04?
Possible causes include a faulty wheel speed sensor, damaged wiring or connectors in the circuit, corrosion, or loose connections in the sensor circuit.
4. How can I diagnose the issue related to OBDII code C0045:04?
Diagnosis typically involves visually inspecting the wiring and connectors for damage, testing the wheel speed sensor with a multimeter, and checking for any corrosion or loose connections.
5. Can I still drive my vehicle with the OBDII code C0045:04 present?
It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the ABS and traction control systems, compromising safety.
6. How can I repair the left rear wheel speed sensor circuit open issue?
Repair typically involves replacing the faulty wheel speed sensor, repairing or replacing damaged wiring or connectors, and ensuring all connections are secure and free of corrosion.
7. Are there any DIY tips for fixing OBDII code C0045:04 at home?
While some basic troubleshooting like checking connections and wiring can be done at home, it is recommended to have a professional diagnose and repair this issue due to the complexity of the ABS system.
8. How much does it cost to fix the OBDII code C0045:04?
Costs can vary depending on the extent of the issue and the specific repairs needed. It is recommended to get a diagnostic from a mechanic to determine the exact cost.
9. Will resetting the OBDII code C0045:04 make it go away permanently?
Resetting the code may temporarily turn off the warning light, but if the underlying issue is not fixed, the code is likely to reappear once the system detects the problem again.
10. Can the OBDII code C0045:04 be related to other ABS or traction control issues?
Yes, this code is often related to ABS or traction control system malfunctions, so it is important to address it promptly to ensure the proper functioning of these safety systems.
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