C1391 Lexus Code - Abnormal Leak Of Accumulator Pressure
Quick Answer
The C1391 diagnostic trouble code for Lexus vehicles indicates an abnormal leak of accumulator pressure within the vehicle's brake system. Common causes include Accumulator seal failure, Accumulator crack or damage, Accumulator valve malfunction. 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
- C1391 Lexus indicates Abnormal Leak Of Accumulator Pressure.
- Common causes
- Common causes include Accumulator seal failure, Accumulator crack or damage, Accumulator valve malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C1391 Lexus Description
The C1391 diagnostic trouble code for Lexus vehicles indicates an abnormal leak of accumulator pressure within the vehicle's brake system. The accumulator is a component of the vehicle's brake hydraulic system that stores hydraulic pressure to assist in brake application. When there is an abnormal leak of pressure in the accumulator, it can lead to a variety of issues that affect the vehicle's braking performance and safety.
Common Causes of C1391 Lexus
- Accumulator seal failure
- Accumulator crack or damage
- Accumulator valve malfunction
- Brake fluid leakage within the accumulator system
- Accumulator sensor failure
Symptoms of C1391 Lexus
- Illumination of the ABS warning light on the dashboard
- Increased brake pedal travel or sponginess
- Difficulty in applying brakes or a loss of braking power
- Unusual noises coming from the brake system, such as hissing or whining
- Uneven braking or pulling to one side when braking
How to Fix C1391 Lexus
- Diagnose the specific cause of the abnormal leak of accumulator pressure by performing a thorough inspection of the brake system, accumulator, and associated components.
- Replace the faulty accumulator or repair any damaged seals, valves, or sensors within the accumulator system.
- Bleed the brake system to remove any air bubbles and ensure proper brake fluid circulation.
- Test the brake system to verify that the accumulator pressure is within the correct range and that the issue has been resolved.
- Clear the diagnostic trouble code from the vehicle's computer system to reset the ABS warning light and ensure proper operation.
Cost to Fix C1391 Lexus
The cost of repairing an abnormal leak of accumulator pressure in a Lexus vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of replacing an accumulator or repairing related components can range from $300 to $800, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary significantly, so it is advisable to obtain quotes from multiple shops to compare prices. Additionally, the cost of diagnostic time and any additional parts needed may also impact the overall repair cost.
Need more information about the C1391 Lexus code?
Need more information on how to fix the C1391 Lexus code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1391 Lexus code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C1391 Lexus Code
1. What are the common symptoms of OBDII code C1391 in a Lexus related to abnormal leak of accumulator pressure?
- Common symptoms include issues with the vehicle's braking system, such as a spongy brake pedal or reduced brake performance.
2. What are the possible causes of OBDII code C1391 in a Lexus indicating abnormal leak of accumulator pressure?
- Possible causes may include a faulty accumulator, leaking hydraulic components, or issues with the brake actuator assembly.
3. How can I diagnose the OBDII code C1391 in my Lexus for abnormal leak of accumulator pressure?
- Diagnosing this code typically involves using a scan tool to read the codes, inspecting the brake system components, and performing a pressure test on the accumulator.
4. What are some repair tips for addressing OBDII code C1391 in a Lexus related to abnormal leak of accumulator pressure?
- Repair tips may include replacing the faulty accumulator, repairing any leaking hydraulic components, or cleaning and inspecting the brake actuator assembly.
5. Is it safe to continue driving my Lexus with OBDII code C1391 indicating abnormal leak of accumulator pressure?
- It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the braking system and compromise driving safety.
6. Can OBDII code C1391 in a Lexus be reset without fixing the underlying issue of abnormal leak of accumulator pressure?
- While you can clear the code temporarily, it is important to address the root cause of the issue to prevent further safety risks and potential damage to the vehicle.
7. How much does it typically cost to repair OBDII code C1391 in a Lexus due to abnormal leak of accumulator pressure?
- The cost of repairs can vary depending on the specific issue causing the code, but it may involve parts replacement, labor costs, and diagnostic fees.
8. Are there any preventive maintenance measures I can take to avoid OBDII code C1391 in my Lexus related to abnormal leak of accumulator pressure?
- Regularly inspecting and maintaining the brake system components, including the accumulator, can help prevent issues that may trigger this OBDII code.
9. Can a DIY enthusiast address OBDII code C1391 in a Lexus on their own, or is professional assistance necessary?
- While some simple inspections and maintenance tasks can be done by DIY enthusiasts, diagnosing and repairing complex issues related to this code may require professional expertise.
10. How long does it typically take to repair OBDII code C1391 in a Lexus caused by abnormal leak of accumulator pressure?
- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a full day for a professional mechanic to address the problem thoroughly.
Discuss the causes and fixes for C1391 Lexus OBDII Code
Code C1391 Lexus comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.