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C0273 Lexus Code - Open In ABS Motor Relay Circuit

Quick Answer

The C0273 diagnostic trouble code for Lexus vehicles indicates an open circuit in the ABS motor relay. Common causes include Damaged wiring or connectors in the ABS motor relay circuit, Corrosion or rust affecting the electrical connections, Faulty ABS motor relay. 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
C0273 Lexus indicates Open In ABS Motor Relay Circuit.
Common causes
Common causes include Damaged wiring or connectors in the ABS motor relay circuit, Corrosion or rust affecting the electrical connections, Faulty ABS motor relay.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code C0273 Lexus Description

The C0273 diagnostic trouble code for Lexus vehicles indicates an open circuit in the ABS motor relay. The ABS (anti-lock braking system) motor relay is responsible for controlling the ABS system's motor, which helps regulate brake pressure during emergency braking situations. When this circuit is open, it means that there is a break in the electrical connection, preventing the relay from functioning properly.

OBDII Code C0273 Lexus - Open In ABS Motor Relay Circuit
C0273 Lexus Code - Open In ABS Motor Relay Circuit

Common Causes of C0273 Lexus

  1. Damaged wiring or connectors in the ABS motor relay circuit
  2. Corrosion or rust affecting the electrical connections
  3. Faulty ABS motor relay
  4. Electrical short in the ABS system
  5. Water or moisture intrusion in the ABS system

Symptoms of C0273 Lexus

  1. ABS warning light illuminated on the dashboard
  2. Loss of ABS functionality during braking
  3. Unusual noises coming from the ABS system
  4. Increased stopping distance during emergency braking
  5. Brakes feel spongy or unresponsive

How to Fix C0273 Lexus

  1. Begin by conducting a thorough inspection of the ABS motor relay circuit to identify any damaged wiring or connectors.
  2. Test the ABS motor relay to determine if it is functioning correctly. Replace the relay if necessary.
  3. Check for any signs of corrosion or rust in the electrical connections and clean or replace as needed.
  4. Clear the diagnostic trouble code from the vehicle's system using a diagnostic tool.
  5. Test drive the vehicle to ensure that the ABS system is functioning properly after the repairs have been completed.

Cost to Fix C0273 Lexus

The typical repair costs for addressing an open circuit in the ABS motor relay circuit can range from $200 to $500, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor. Rates may be higher at dealerships or in metropolitan areas, while independent shops often offer lower rates. To obtain a more precise estimate, it is advisable to check local rates before proceeding with the repair.

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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 C0273 Lexus Code

1. What are the common symptoms of OBDII code C0273 in a Lexus, indicating an open in the ABS motor relay circuit?

The common symptoms include the ABS warning light illuminating on the dashboard, potential loss of ABS functionality, and unusual braking behavior.

2. What are the possible causes of the OBDII code C0273 in a Lexus?

Possible causes include a faulty ABS motor relay, damaged wiring or connectors in the circuit, a blown fuse, or a malfunctioning ABS control module.

3. How can I diagnose the open in the ABS motor relay circuit related to code C0273 in my Lexus?

Diagnosing this issue typically involves checking the ABS motor relay, inspecting the wiring and connectors for damage, testing the fuse for continuity, and using a scan tool to retrieve and interpret the fault codes.

4. Is it safe to continue driving my Lexus with OBDII code C0273 indicating an open in the ABS motor relay circuit?

It is not recommended to drive your vehicle with this issue unresolved, as it can compromise the effectiveness of the ABS system and potentially impact overall braking performance.

5. Can I repair the open in the ABS motor relay circuit causing code C0273 in my Lexus myself?

Depending on your level of automotive repair experience, you may be able to address this issue yourself by replacing the faulty ABS motor relay, repairing damaged wiring or connectors, or replacing a blown fuse. However, professional assistance may be necessary for more complex diagnostics and repairs.

6. How much does it typically cost to repair OBDII code C0273 in a Lexus related to an open in the ABS motor relay circuit?

The cost of repair can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or seek professional assistance. It is advisable to obtain quotes from local mechanics or service centers for an accurate estimate.

7. Are there any preventive measures I can take to avoid encountering OBDII code C0273 in my Lexus in the future?

Regular maintenance of your vehicle's ABS system, such as checking for signs of wear or damage, ensuring proper electrical connections, and promptly addressing any warning lights or unusual behavior, can help prevent issues like an open in the ABS motor relay circuit.

8. Can OBDII code C0273 in a Lexus be triggered by other underlying problems besides an open in the ABS motor relay circuit?

While code C0273 specifically points to an open in the ABS motor relay circuit, it is possible for other related issues within the ABS system to trigger similar fault codes. Thorough diagnostics are crucial to pinpoint the exact cause of the problem.

9. Will resetting the OBDII system clear the C0273 code related to an open in the ABS motor relay circuit in my Lexus?

Simply resetting the OBDII system may temporarily clear the fault code, but if the underlying issue causing the open in the ABS motor relay circuit is not addressed, the code is likely to reappear once the system detects the problem again.

10. How urgent is it to address OBDII code C0273 in a Lexus indicating an open in the ABS motor relay circuit?

It is advisable to address this issue promptly to ensure the proper functioning of the ABS system in your vehicle. Delaying repairs can compromise safety and lead to further damage if left unresolved.

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