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Engine-Codes – Scion – C1380 Scion

C1380 Scion Code - Stop Light Control Relay Malfunction

Quick Answer

The C1380 diagnostic trouble code (DTC) indicates a malfunction within the stop light control relay system in Scion vehicles. Common causes include Failed stop light control relay, Damaged or corroded wiring in the stop light circuit, Faulty brake light switch. 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 Scion indicates Stop Light Control Relay Malfunction.
Common causes
Common causes include Failed stop light control relay, Damaged or corroded wiring in the stop light circuit, Faulty brake light switch.
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 Oct 03, 2024
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Code C1380 Scion Description

The C1380 diagnostic trouble code (DTC) indicates a malfunction within the stop light control relay system in Scion vehicles. This code is primarily associated with the vehicle's braking system, specifically the circuit that controls the stop lights. When the brake pedal is pressed, the stop light control relay is responsible for activating the brake lights, signaling to other drivers that the vehicle is slowing down or stopping. A malfunction in this relay can lead to several performance issues.

OBDII Code C1380 Scion - Stop Light Control Relay Malfunction
C1380 Scion Code - Stop Light Control Relay Malfunction

Common Causes of C1380 Scion

  1. Failed stop light control relay.
  2. Damaged or corroded wiring in the stop light circuit.
  3. Faulty brake light switch.
  4. Poor electrical connections or grounding issues.
  5. Malfunctioning body control module (BCM) that manages the relay operation.

Symptoms of C1380 Scion

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Warning lights on the dashboard, such as the brake warning light or ABS light.
  3. Inconsistent operation of the brake lights (e.g., flickering or delayed response).
  4. Malfunctioning cruise control system, if equipped.
  5. Difficulty engaging or disengaging the vehicle from gear, particularly in automatic transmissions.

How to Fix C1380 Scion

  1. Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the C1380 code and check for any related codes that may provide additional context.
  2. Visual Inspection: Inspect the stop light control relay and associated wiring for signs of damage, corrosion, or loose connections.
  3. Relay Replacement: If the relay is found to be faulty, replace it with a new one. Ensure that the replacement part is compatible with the specific Scion model.
  4. Brake Light Switch Check: Test the brake light switch for proper operation. If it is malfunctioning, replace it to restore functionality.
  5. Wiring Repair: If damaged wiring is identified, repair or replace the affected sections to ensure a reliable electrical connection.

Cost to Fix C1380 Scion

The cost to repair a C1380 code can vary widely based on several factors, including the specific vehicle model, the extent of the damage, and local labor rates. On average, the cost for parts (relay, brake light switch, etc.) may range from $50 to $150. Labor costs can range from $80 to $150 per hour, depending on the shop's location and reputation. A typical repair involving diagnostics, parts replacement, and labor may total between $150 and $400. It's important to note that specific diagnosis time and labor rates can vary, so checking local rates at different auto repair shops is advisable for a more precise estimate.

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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 C1380 Scion Code

1. What are the common symptoms of OBDII code C1380 in a Scion related to Stop Light Control Relay Malfunction?

The common symptoms include non-functioning brake lights, ABS warning light illuminated on the dashboard, and potential issues with the vehicle's cruise control system.

2. What are the possible causes of the OBDII code C1380 in a Scion indicating Stop Light Control Relay Malfunction?

The code C1380 in a Scion typically points to a malfunction in the stop light control relay, which can be caused by relay failure, wiring issues, or a faulty brake light switch.

3. How can I diagnose the OBDII code C1380 in my Scion for Stop Light Control Relay Malfunction?

Diagnosing the code C1380 involves checking the stop light control relay, inspecting the wiring for any damage, and testing the brake light switch for proper functionality using a diagnostic scanner.

4. Can I drive my Scion with the OBDII code C1380 indicating Stop Light Control Relay Malfunction?

It is not recommended to drive your Scion with the code C1380 present, as non-functioning brake lights can pose a safety hazard on the road. It is advised to address the issue promptly.

5. How can I repair the OBDII code C1380 in my Scion for Stop Light Control Relay Malfunction?

To repair the code C1380, you may need to replace the faulty stop light control relay, repair any damaged wiring, or replace the brake light switch if necessary. It is recommended to consult a professional mechanic for accurate repair.

6. Will resetting the OBDII code C1380 in my Scion fix the Stop Light Control Relay Malfunction?

Resetting the code C1380 may temporarily turn off the warning light, but it will not fix the underlying issue causing the Stop Light Control Relay Malfunction. It is crucial to address the root cause of the problem for a lasting solution.

7. Can a DIY enthusiast fix the OBDII code C1380 related to Stop Light Control Relay Malfunction in a Scion?

While some DIY enthusiasts may be able to diagnose and replace the stop light control relay or brake light switch, it is recommended to seek professional help for accurate diagnosis and repair of the issue to ensure safety and proper functioning of the vehicle.

8. Is the OBDII code C1380 indicating Stop Light Control Relay Malfunction a common issue in Scion vehicles?

The OBDII code C1380 related to Stop Light Control Relay Malfunction is not as common as some other OBDII codes, but it can still occur in Scion vehicles due to relay or wiring issues affecting the brake light system.

9. Will a faulty stop light control relay cause any other issues in my Scion besides triggering the OBDII code C1380?

A faulty stop light control relay can potentially cause other issues in your Scion, such as non-functioning brake lights, ABS system malfunctions, and problems with the cruise control system. It is essential to address the problem promptly.

10. Are there any preventive measures to avoid encountering the OBDII code C1380 related to Stop Light Control Relay Malfunction in my Scion?

Regularly inspecting the brake light system, checking the condition of the stop light control relay, and ensuring proper wiring connections can help prevent the occurrence of the OBDII code C1380 in your Scion due to Stop Light Control Relay Malfunction.

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