C146D Lexus Code - Short in ABS Motor Relay Circuit
Quick Answer
The Motor Relay and motor fail-safe relay are built into the Brake Actuator Assembly. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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
- C146D Lexus indicates Short in ABS Motor Relay Circuit.
- Common causes
- Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 C146D Lexus Description
This DTC may be stored when the voltage to the motor relay power source is lower than the DTC detection condition due to low output from the battery or alternator.
What are the Possible Causes of the DTC C146D Lexus?
- Faulty Skid Control ECU (Brake Actuator Assembly)
- Skid Control ECU harness is open or shorted
- Skid Control ECU circuit poor electrical connection
How to Fix the DTC C146D Lexus?
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 C146D Lexus 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 C146D Lexus Code
1. What are the common symptoms of OBDII code C146D (Short in ABS Motor Relay Circuit) in a Lexus?
The common symptoms include the ABS warning light being illuminated on the dashboard, loss of ABS functionality, and potential issues with the vehicle's braking system.
2. What are some possible causes of OBDII code C146D in a Lexus?
Potential causes of this code include a short circuit in the ABS motor relay circuit, damaged wiring or connectors, a faulty ABS motor relay, or issues with the ABS control module.
3. How can I diagnose the source of the short in the ABS motor relay circuit in my Lexus?
To diagnose the issue, you can perform a visual inspection of the wiring and connectors, test the ABS motor relay, and use a diagnostic scanner to retrieve and interpret the trouble codes stored in the ABS system.
4. Can I continue driving my Lexus with OBDII code C146D present?
It is not recommended to drive your vehicle with this code present, as it indicates a potential issue with the ABS system that could compromise braking performance and overall safety.
5. How can I clear OBDII code C146D from my Lexus's system?
Once the underlying issue causing the code has been identified and resolved, you can use an OBDII scanner to clear the code and reset the ABS system's fault memory.
6. Is it possible to repair the short in the ABS motor relay circuit myself?
While some DIY enthusiasts may be able to address simple wiring or connector issues, diagnosing and repairing the specific cause of the short circuit may require advanced knowledge and specialized tools. It is recommended to seek assistance from a qualified mechanic.
7. How much does it typically cost to repair OBDII code C146D in a Lexus?
The cost of repairing this code can vary depending on the cause of the issue, the extent of the damage, and labor rates in your area. It is advisable to obtain estimates from reputable repair shops for an accurate assessment.
8. Will fixing OBDII code C146D improve my Lexus's overall performance?
Resolving this code will restore the proper functioning of the ABS system in your Lexus, ensuring optimal braking performance and safety while driving.
9. Are there any preventive maintenance measures I can take to avoid OBDII code C146D in the future?
Regularly inspecting the ABS system components, maintaining proper wiring connections, and addressing any warning lights or unusual symptoms promptly can help prevent issues leading to this trouble code.
10. How long does it typically take to repair OBDII code C146D in a Lexus?
The repair time can vary depending on the complexity of the issue and the availability of parts. In some cases, the repair can be completed within a few hours, but more extensive repairs may take longer.
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