C146B Lexus Code - SRL Solenoid Circuit
Quick Answer
The SRL Solenoid turns on when the signal is received from the Skid Control ECU (Brake Actuator Assembly) and they control the pressure acting on the wheel cylinders to control the braking force. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly). 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
- C146B Lexus indicates SRL Solenoid Circuit.
- Common causes
- Common causes include Faulty Skid Control ECU (Brake Actuator Assembly).
- 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 C146B Lexus Description
What are the Possible Causes of the DTC C146B Lexus?
- Faulty Skid Control ECU (Brake Actuator Assembly)
How to Fix the DTC C146B 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 C146B 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 C146B Lexus Code
1. What does the OBDII code C146B on a Lexus mean?
The C146B code indicates an issue with the SRL (Solenoid Relay Lock) Solenoid Circuit in the vehicle's brake control system.
2. What are the common symptoms of the C146B code on a Lexus?
Symptoms may include the ABS warning light turning on, reduced braking performance, and possible loss of traction control functionality.
3. What causes the C146B code to appear on a Lexus?
Common causes include a faulty SRL solenoid, damaged wiring or connectors in the solenoid circuit, or an issue with the ABS control module.
4. Can I drive my Lexus with the C146B code?
While the car may still be drivable, it is not recommended as braking performance and safety features like ABS and traction control could be compromised.
5. How is the C146B code diagnosed?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the SRL solenoid and ABS control module for proper operation.
6. What are the repair options for the C146B code on a Lexus?
Repairs may include replacing the faulty SRL solenoid, repairing or replacing damaged wiring or connectors, or reprogramming/replacing the ABS control module.
7. How much does it cost to fix the C146B code on a Lexus?
Repair costs can vary but typically range from $150 to $500 depending on whether wiring repairs or solenoid replacement is required.
8. Can a dead battery cause the C146B code to appear?
A weak or dead battery is unlikely to directly cause the code, but electrical issues stemming from low voltage can sometimes impact the solenoid circuit.
9. Does the C146B code require specialized tools to fix?
Yes, diagnosing and repairing this code often requires a professional-grade scan tool and possibly multimeters to test voltage and continuity in the solenoid circuit.
10. Is the C146B code a common issue in Lexus vehicles?
While not extremely common, the C146B code can occur in Lexus models, particularly if there is wear and tear on the ABS system components.
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