Engine-CodesScion – C146C Scion

C146C Scion Code - Open In ABS Motor Relay Circuit

Quick Answer

The C146C diagnostic trouble code for Scion vehicles indicates an open in the ABS motor relay circuit. Common causes include Damaged wiring in the ABS motor relay circuit, Faulty ABS motor relay, Blown fuse related to the ABS system. 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
C146C Scion indicates Open In ABS Motor Relay Circuit.
Common causes
Common causes include Damaged wiring in the ABS motor relay circuit, Faulty ABS motor relay, Blown fuse related to the ABS system.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code C146C Scion Description

The C146C diagnostic trouble code for Scion vehicles indicates an open in the ABS motor relay circuit. This means that there is a break or interruption in the electrical circuit that controls the ABS motor relay. The ABS motor relay is responsible for activating the ABS system, which helps prevent the wheels from locking up during braking, especially in slippery conditions. When there is an open circuit in this relay, it can lead to the ABS system not functioning properly, potentially compromising the vehicle's ability to brake effectively and safely.

OBDII Code C146C Scion - Open In ABS Motor Relay Circuit
C146C Scion Code - Open In ABS Motor Relay Circuit

Common Causes of C146C Scion

  1. Damaged wiring in the ABS motor relay circuit
  2. Faulty ABS motor relay
  3. Blown fuse related to the ABS system
  4. Malfunctioning ABS control module
  5. Corrosion or poor connections in the ABS system components

Symptoms of C146C Scion

  1. Illumination of the ABS warning light on the dashboard
  2. Ineffective or inconsistent ABS system operation
  3. Increased stopping distances during braking
  4. Unusual noises coming from the ABS system
  5. ABS system not engaging during slippery road conditions

How to Fix C146C Scion

  1. Begin by conducting a thorough inspection of the ABS motor relay circuit, checking for any visible damage to the wiring or connections.
  2. Test the ABS motor relay using a multimeter to determine if it is functioning correctly. Replace the relay if it is found to be faulty.
  3. Inspect the ABS control module for any signs of damage or corrosion. Replace or repair the module as needed.
  4. Check and replace any blown fuses related to the ABS system.
  5. Clear the diagnostic trouble codes from the vehicle's computer system and test the ABS system to ensure proper operation.

Cost to Fix C146C Scion

The cost of repairing an open in the ABS motor relay circuit can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple shops to ensure a competitive price. Additionally, factors such as the vehicle's make and model, as well as the complexity of the repair, can also influence the final cost.

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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 C146C Scion Code

1. What does the OBDII code C146C mean on a Scion?

C146C indicates an open circuit in the ABS motor relay, which is part of the Anti-Lock Braking System (ABS).

2. What are the symptoms of the C146C code in a Scion?

Common symptoms include the ABS warning light turning on, reduced braking performance, and the ABS system not functioning properly.

3. What causes the C146C code to appear?

The code is typically caused by a faulty ABS motor relay, damaged wiring or connectors in the circuit, or a malfunction in the ABS control module.

4. Can I still drive my Scion with the C146C code?

While the car may still be drivable, the ABS system may not work correctly, increasing the risk of wheel lockup and reduced safety during emergency braking.

5. How do I diagnose the C146C code in my Scion?

Start by inspecting the ABS motor relay, checking for damaged wires or connectors, and testing the relay and circuit for continuity with a multimeter.

6. How can I fix the C146C code on my Scion?

Repairs may include replacing the ABS motor relay, repairing or replacing damaged wiring, or, in rare cases, replacing the ABS control module.

7. What tools are needed to troubleshoot the C146C code?

You’ll need an OBDII scanner, a multimeter, and basic tools to inspect and test the ABS motor relay and wiring.

8. How much does it cost to fix the C146C code?

Repair costs can range from $50 to $300, depending on whether the issue is with the relay, wiring, or control module.

9. Can a low battery cause the C146C code to appear?

Yes, a weak or failing battery can cause voltage issues that may trigger the C146C code in some cases.

10. Does clearing the code fix the problem?

Clearing the code may temporarily turn off the warning light, but the underlying issue must be repaired to prevent the code from returning.

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