AutoCodes – Lexus – C1259 Lexus

C1259 Lexus Code - HV System Regenerative Malfunction

Quick Answer

The Skid Control ECU communicates with the Hybrid Control ECU and controls braking force according to the motor's regenerative force. Common causes include Hybrid Control System, Faulty Hybrid Control ECU. 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: C1259 Lexus indicates HV System Regenerative Malfunction.
Common causes: Common causes include Hybrid Control System, Faulty Hybrid Control ECU.
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 14,528

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 Aug 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1259 Lexus Description

The Skid Control ECU communicates with the Hybrid Control ECU and controls braking force according to the motor's regenerative force. The Skid Control ECU sends Enhanced VSC signal to the Hybrid Control ECU and inputs operating signal from the Hybrid Control ECU. The Skid Control ECU uses CAN communication for communication with the Hybrid Control ECU. If a communication malfunction is memorized, the Skid Control ECU prohibits Enhanced VSC operation and a part of ECB control by fail safe function.

OBDII Code C1259 Lexus - HV System Regenerative Malfunction - AutoCodes.com — C1259 Lexus Code - HV System Regenerative Malfunction

What does this mean?

What are the Possible Causes of the DTC C1259 Lexus?

Hybrid Control System
Faulty Hybrid Control ECU

How to Fix the DTC C1259 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 C1259 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.

Need more information about the C1259 Lexus code?

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Need Help with the Code?

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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 C1259 Lexus Code

1. What are the common symptoms of OBDII code C1259 in a Lexus related to HV System Regenerative Malfunction?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and a noticeable decrease in hybrid system performance.

2. What are the possible causes of OBDII code C1259 in a Lexus indicating HV System Regenerative Malfunction?

- Possible causes include issues with the hybrid battery, regenerative braking system, faulty sensors, or malfunctioning electronic components.

3. How can I diagnose OBDII code C1259 in my Lexus related to HV System Regenerative Malfunction?

- A thorough diagnostic scan using an OBDII scanner can help pinpoint the exact cause of the code. It's recommended to consult a professional mechanic for a detailed diagnosis.

4. What are some repair tips for addressing OBDII code C1259 in a Lexus?

- Repair tips may include checking the hybrid battery's health, inspecting the regenerative braking system, ensuring proper sensor functionality, and addressing any electronic component issues.

5. Is it safe to continue driving my Lexus with OBDII code C1259 indicating HV System Regenerative 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. Seek professional assistance to prevent potential safety hazards.

6. Can I reset OBDII code C1259 in my Lexus without addressing the underlying issue?

- While you can clear the code using an OBDII scanner, it's crucial to address the root cause of the problem to prevent the code from reappearing and ensure the proper functioning of the hybrid system.

7. How much does it typically cost to repair OBDII code C1259 in a Lexus related to HV System Regenerative Malfunction?

- The cost of repair can vary depending on the specific issue causing the code. It's advisable to get a diagnosis from a qualified mechanic to determine the exact repair cost.

8. Are there any preventive maintenance measures to avoid OBDII code C1259 in a Lexus?

- Regular maintenance of the hybrid system, including checking the battery health and monitoring system performance, can help prevent issues that may trigger OBDII code C1259.

9. Will OBDII code C1259 in a Lexus affect the overall performance of the vehicle?

- Yes, this code can impact the performance of the hybrid system, potentially leading to decreased fuel efficiency and overall drivability issues if left unaddressed.

10. How long does it typically take to repair OBDII code C1259 in a Lexus?

- The repair time can vary based on the specific cause of the code. Some repairs may be quick and straightforward, while others may require more extensive diagnosis and repair, potentially taking longer to resolve.