AutoCodes – Subaru – C0102 Subaru

C0102 Subaru Code - Rear ABS Wheel Speed Sensor Left

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Rear ABS Wheel Speed Sensor Left. Common causes include Faulty Rear ABS Wheel Speed Sensor Left, Rear ABS Wheel Speed Sensor Left harness is open or shorted, Rear ABS Wheel Speed Sensor Left 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: C0102 Subaru indicates Rear ABS Wheel Speed Sensor Left.
Common causes: Common causes include Faulty Rear ABS Wheel Speed Sensor Left, Rear ABS Wheel Speed Sensor Left harness is open or shorted, Rear ABS Wheel Speed Sensor Left 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.

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Code Popularity 8,807

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0102 Subaru Description

The Anti-Lock Brake System (ABS) Module monitors the Rear ABS Wheel Speed Sensor Left. The ABS Module sets the OBDII code when the Rear ABS Wheel Speed Sensor Left is not to factory specifications.

OBDII Code C0102 Subaru - Rear ABS Wheel Speed Sensor Left - AutoCodes.com — C0102 Subaru Code - Rear ABS Wheel Speed Sensor Left

What does this mean?

What are the Possible Causes of the DTC C0102 Subaru?

Faulty Rear ABS Wheel Speed Sensor Left
Rear ABS Wheel Speed Sensor Left harness is open or shorted
Rear ABS Wheel Speed Sensor Left circuit poor electrical connection

How to Fix the DTC C0102 Subaru?

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 C0102 Subaru 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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Get the C0102 Subaru code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0102 Subaru Code

1. What are the common symptoms of OBDII code C0102 in a Subaru related to the Rear ABS Wheel Speed Sensor Left?

The common symptoms include the ABS warning light illuminating on the dashboard, inconsistent or incorrect readings of the left rear wheel speed, and potential issues with the vehicle's stability control system.

2. What are the typical causes of OBDII code C0102 in a Subaru?

The code C0102 typically indicates a malfunction or failure of the Rear ABS Wheel Speed Sensor on the left side. This can be caused by damage to the sensor, faulty wiring or connectors, or issues with the ABS control module.

3. How can I diagnose the source of OBDII code C0102 in my Subaru?

To diagnose the issue, you can use an OBDII scanner to read the code and determine if it specifically relates to the Rear ABS Wheel Speed Sensor Left. Additionally, visually inspect the sensor and its wiring for any signs of damage or corrosion.

4. Can I continue driving my Subaru with OBDII code C0102 present?

It is not recommended to drive your Subaru with the C0102 code active, as it can affect the vehicle's ABS and stability control systems, compromising safety. It's best to address the issue promptly.

5. How can I repair OBDII code C0102 related to the Rear ABS Wheel Speed Sensor Left in my Subaru?

Repairing the issue may involve replacing the faulty Rear ABS Wheel Speed Sensor on the left side. It's important to use genuine Subaru parts and follow the manufacturer's recommended repair procedures.

6. Are there any DIY tips for fixing OBDII code C0102 in a Subaru?

While some experienced DIYers may attempt to replace the Rear ABS Wheel Speed Sensor themselves, it is recommended to have a professional mechanic perform the repair to ensure proper installation and calibration.

7. How much does it cost to repair OBDII code C0102 in a Subaru?

The cost of repairing OBDII code C0102 can vary depending on the cause of the issue, labor rates, and parts costs. It's advisable to get a few quotes from reputable repair shops to compare prices.

8. Will clearing the OBDII code C0102 make it go away permanently?

Clearing the code may temporarily turn off the warning light, but if the underlying issue causing the C0102 code is not addressed, it is likely to reappear. It's important to diagnose and fix the root cause of the problem.

9. Can extreme weather conditions affect the Rear ABS Wheel Speed Sensor and trigger OBDII code C0102 in a Subaru?

Yes, extreme weather conditions such as heavy rain, snow, or extreme cold can potentially damage the sensor or its wiring, leading to the activation of OBDII code C0102.

10. Is it safe to drive my Subaru if only the ABS warning light is illuminated due to OBDII code C0102?

Driving with the ABS warning light on is not recommended, as it indicates a potential issue with the ABS system. It's best to have the vehicle inspected by a professional to ensure safe operation.