C1020 Code - Left Rear Wheel Speed Sensor Circuit
Quick Answer
The Anti-Lock Brake System (ABS) Module monitors the Left Rear Wheel Speed Sensor. 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
- C1020 indicates Left Rear Wheel Speed Sensor Circuit.
- 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 C1020 Description
What are the Possible Causes of the DTC C1020?
- 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 Anti-Lock Brake System (ABS) Module
How to Fix the DTC C1020?
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 C1020 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.
Need more information about the C1020 code?
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Information for Specific Makes
- C1020 Chrysler — Left Rear Wheel Speed Sensor Circuit
- C1020 Dodge — Left Rear Wheel Speed Sensor Circuit
- C1020 Ford — Brake System Fill Not Complete: No Sub-Type Information
- C1020 Jeep — Left Rear Wheel Speed Sensor Circuit
- C1020 Lincoln — Brake System Fill Not Complete: No Sub-Type Information
- C1020 Mercury — Brake System Fill Not Complete: No Sub-Type Information
- C1020 Suzuki — Master Cylinder Pressure Sensor Power Supply Failure
Frequently Asked Questions about C1020 Code
1. What are common symptoms of OBDII code C1020?
- Common symptoms include the ABS warning light illuminating on the dashboard, traction control issues, and potential loss of stability control.
2. What does OBDII code C1020 indicate?
- OBDII code C1020 indicates a fault in the left rear wheel speed sensor circuit.
3. What are possible causes of OBDII code C1020?
- Possible causes include a faulty wheel speed sensor, damaged wiring or connectors in the circuit, or issues with the ABS module.
4. How can I diagnose the cause of OBDII code C1020?
- Diagnosing the issue involves performing a visual inspection of the wiring and connectors, testing the wheel speed sensor, and using a scan tool to read data from the ABS system.
5. Can I still drive my vehicle with OBDII code C1020?
- It is not recommended to drive your vehicle with OBDII code C1020, as it can affect the proper functioning of your ABS and stability control systems.
6. How can I repair OBDII code C1020?
- Repairing OBDII code C1020 may involve replacing the left rear wheel speed sensor, repairing damaged wiring or connectors, or addressing any issues with the ABS module.
7. Will OBDII code C1020 cause my vehicle to fail an emissions test?
- OBDII code C1020 is related to the ABS system and should not cause your vehicle to fail an emissions test.
8. Is it possible to reset OBDII code C1020 without fixing the underlying issue?
- While you can reset the code temporarily, it will likely reappear until the underlying issue with the left rear wheel speed sensor circuit is addressed.
9. Can extreme weather conditions trigger OBDII code C1020?
- Extreme weather conditions can potentially contribute to issues with the wheel speed sensor circuit, leading to the triggering of OBDII code C1020.
10. How much does it typically cost to repair OBDII code C1020?
- Repair costs for OBDII code C1020 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.
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