AutoCodes – Lexus – C1377 Lexus

C1377 Lexus Code - Capacitor Malfunction

Quick Answer

The Brake Control Power Supply Assembly (Capacitor) provides auxiliary power for brake control when an auxiliary battery (12 V) voltage drops. Common causes include Faulty Brake Control Power Supply Assembly (Capacitor), Brake Control Power Supply Assembly harness is open or shorted, Brake Control Power Supply Assembly 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: C1377 Lexus indicates Capacitor Malfunction.
Common causes: Common causes include Faulty Brake Control Power Supply Assembly (Capacitor), Brake Control Power Supply Assembly harness is open or shorted, Brake Control Power Supply Assembly 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.

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Code Popularity 8,996

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1377 Lexus Description

The Brake Control Power Supply Assembly (Capacitor) provides auxiliary power for brake control when an auxiliary battery (12 V) voltage drops.

OBDII Code C1377 Lexus - Capacitor Malfunction - AutoCodes.com — C1377 Lexus Code - Capacitor Malfunction

What does this mean?

What are the Possible Causes of the DTC C1377 Lexus?

Faulty Brake Control Power Supply Assembly (Capacitor)
Brake Control Power Supply Assembly harness is open or shorted
Brake Control Power Supply Assembly circuit poor electrical connection

How to Fix the DTC C1377 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 C1377 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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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 C1377 Lexus Code

1. What are the common symptoms of OBDII code C1377 in a Lexus related to capacitor malfunction?

- Common symptoms include issues with the hybrid battery system, such as poor acceleration, reduced fuel efficiency, and warning lights on the dashboard.

2. What typically causes the OBDII code C1377 in a Lexus related to capacitor malfunction?

- The code C1377 is often caused by a malfunctioning capacitor in the hybrid system, which can result from electrical issues or internal component failure.

3. How can I diagnose the OBDII code C1377 in a Lexus related to capacitor malfunction?

- Diagnosis usually involves using a scan tool to read the code, inspecting the hybrid system components for any visible damage, and testing the capacitor for proper functionality.

4. Is it safe to continue driving my Lexus with the OBDII code C1377 related to capacitor malfunction?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid system and potentially cause a breakdown.

5. Can I repair the capacitor malfunction causing the OBDII code C1377 in my Lexus by myself?

- Repairing the capacitor malfunction typically requires specialized knowledge and tools, so it is recommended to have it fixed by a professional technician familiar with hybrid systems.

6. How much does it cost to repair the capacitor malfunction causing the OBDII code C1377 in a Lexus?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it can range from a few hundred to a couple thousand dollars.

7. Are there any preventive maintenance tips to avoid the OBDII code C1377 related to capacitor malfunction in a Lexus?

- Regularly servicing the hybrid system, checking the battery health, and addressing any electrical issues promptly can help prevent capacitor malfunctions and related codes.

8. Will resetting the OBDII code C1377 related to capacitor malfunction in a Lexus make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the capacitor malfunction is not addressed, the code is likely to reappear.

9. Can a faulty capacitor causing the OBDII code C1377 in a Lexus be repaired, or does it need to be replaced?

- In most cases, a faulty capacitor causing this code will need to be replaced with a new one to ensure the proper functioning of the hybrid system.

10. How long does it take to repair the capacitor malfunction causing the OBDII code C1377 in a Lexus?

- The repair time can vary depending on the technician's expertise, availability of parts, and the extent of the issue, but it generally takes a few hours to a day to complete the repair.