C146D 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 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 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?
- 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?
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 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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Information for Specific Makes
- C146D Lexus — Short in ABS Motor Relay Circuit
- C146D Scion — Short in ABS Motor Relay Circuit
- C146D Toyota — Short in ABS Motor Relay Circuit
Frequently Asked Questions about C146D Code
1. What are the common symptoms of OBDII code C146D (Short in ABS Motor Relay Circuit)?
- Common symptoms may include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with the braking system.
2. What are some possible causes of OBDII code C146D?
- Possible causes may include a short circuit in the ABS motor relay circuit, damaged wiring or connectors, a faulty ABS control module, or a malfunctioning ABS motor relay.
3. How can I diagnose the source of OBDII code C146D?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, inspecting the ABS motor relay circuit for any visible damage, testing the ABS control module and relay, and checking the wiring and connectors for continuity.
4. Can I continue driving my vehicle with OBDII code C146D?
- It is not recommended to drive the vehicle with an active ABS fault code, as it may compromise the effectiveness of the braking system. It is best to address the issue promptly.
5. How can I repair OBDII code C146D (Short in ABS Motor Relay Circuit)?
- Repair options may include replacing the damaged wiring or connectors, repairing the short circuit in the ABS motor relay circuit, replacing the ABS control module or relay if faulty, and clearing the code with a diagnostic scanner.
6. Are there any DIY tips for troubleshooting OBDII code C146D?
- DIY tips may include visually inspecting the wiring and connectors for any signs of damage, checking the ABS fuse for continuity, and consulting the vehicle's repair manual for specific diagnostic procedures.
7. Is OBDII code C146D a serious issue?
- While it may not directly impact the drivability of the vehicle, OBDII code C146D should be addressed promptly to ensure the proper functioning of the ABS system and overall safety of the vehicle.
8. Can a mechanic help with diagnosing and repairing OBDII code C146D?
- Yes, a qualified mechanic with experience in ABS systems can assist in diagnosing the issue, identifying the root cause of the fault code, and performing the necessary repairs to resolve OBDII code C146D.
9. How much does it typically cost to repair OBDII code C146D?
- The cost of repairing OBDII code C146D can vary depending on the underlying cause of the issue, the extent of the repairs needed, and the labor rates in your area. It is advisable to obtain quotes from different repair shops for an accurate estimate.
10. Can OBDII code C146D be prevented in the future?
- While some causes of OBDII code C146D may be unavoidable, regular maintenance of the ABS system, timely repairs of any related issues, and proper handling of the vehicle can help minimize the risk of encountering this fault code in the future.
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