C1380 Lexus Code - Stop Light Control Relay Malfunction
Quick Answer
Upon receiving the trailer sway control operating signal from the Skid Control ECU (Brake Actuator Assembly), the relay contact turns on and the stop lights come on. Common causes include Faulty Stop Light fuse, Stop Light harness is open or shorted, Stop Light 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
- C1380 Lexus indicates Stop Light Control Relay Malfunction.
- Common causes
- Common causes include Faulty Stop Light fuse, Stop Light harness is open or shorted, Stop Light 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 C1380 Lexus Description
What are the Possible Causes of the DTC C1380 Lexus?
- Faulty Stop Light fuse
- Stop Light harness is open or shorted
- Stop Light circuit poor electrical connection
- Faulty Stop Light Control Relay (Bulb type Stop Light)
- Faulty Stop Light Control ECU Assembly (LED type Stop Light)
- Faulty Skid Control ECU (Brake Actuator Assembly)
How to Fix the DTC C1380 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 C1380 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 C1380 Lexus Code
1. What does the OBDII code C1380 mean on a Lexus?
The code C1380 indicates a Stop Light Control Relay Malfunction, meaning there’s an issue with the relay responsible for controlling the stop lights.
2. What are the common symptoms of code C1380 on a Lexus?
Symptoms may include non-functional brake lights, ABS and traction control warning lights illuminated, and difficulty shifting out of park.
3. What causes the C1380 code to appear on a Lexus?
Common causes include a faulty stop light control relay, damaged wiring or connectors in the brake light circuit, or issues with the brake light switch.
4. Can a faulty stop light control relay affect the vehicle’s braking system?
Yes, a malfunctioning relay can impact the ABS and traction control systems, as these rely on signals from the brake light circuit.
5. How do you diagnose the C1380 code on a Lexus?
Diagnosis involves checking the stop light control relay, inspecting wiring and connectors in the circuit, and testing the brake light switch for proper operation.
6. Can I still drive my Lexus with the C1380 code active?
Driving with this code may be unsafe, as brake lights could fail and ABS/traction control systems may not function properly.
7. How do you fix the C1380 code on a Lexus?
Repairs typically involve replacing the faulty stop light control relay, repairing damaged wiring, or replacing the brake light switch if necessary.
8. Is the C1380 code related to the brake pedal position sensor?
While not directly related, issues with the brake pedal position sensor can sometimes trigger similar symptoms or codes.
9. How much does it cost to repair the C1380 code on a Lexus?
Repair costs vary but generally range from $100 to $300 depending on whether the relay, wiring, or switch needs replacement.
10. Can a DIYer fix the C1380 code on a Lexus?
Yes, if you’re comfortable working with electrical components, you can replace the relay or repair wiring, but professional diagnostics may be needed for complex issues.
Discuss the causes and fixes for C1380 Lexus OBDII Code
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