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P1859 Mitsubishi Code - Disengagement Too Late With Clutch 1

Quick Answer

The P1859 diagnostic trouble code (DTC) for Mitsubishi vehicles indicates that the clutch 1 disengagement is occurring too late. Common causes include Worn clutch components, such as the clutch disc, pressure plate, or release bearing, Hydraulic system failure, such as a leak in the clutch master cylinder or slave cylinder, Air in the clutch hydraulic system, leading to spongy or inconsistent pedal feel. 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
P1859 Mitsubishi indicates Disengagement Too Late With Clutch 1.
Common causes
Common causes include Worn clutch components, such as the clutch disc, pressure plate, or release bearing, Hydraulic system failure, such as a leak in the clutch master cylinder or slave cylinder, Air in the clutch hydraulic system, leading to spongy or inconsistent pedal feel.
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 Sep 10, 2024
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Code P1859 Mitsubishi Description

The P1859 diagnostic trouble code (DTC) for Mitsubishi vehicles indicates that the clutch 1 disengagement is occurring too late. This means that the clutch is not fully disengaging when it should, leading to potential issues with shifting gears and overall performance of the vehicle. The clutch is a critical component of the manual transmission system, responsible for engaging and disengaging the engine's power to the transmission and ultimately to the wheels. When the clutch does not disengage properly, it can result in difficulty shifting gears, grinding noises, clutch slippage, and ultimately, damage to the transmission and other related components.

OBDII Code P1859 Mitsubishi - Disengagement Too Late With Clutch 1
P1859 Mitsubishi Code - Disengagement Too Late With Clutch 1

Common Causes of P1859 Mitsubishi

  1. Worn clutch components, such as the clutch disc, pressure plate, or release bearing.
  2. Hydraulic system failure, such as a leak in the clutch master cylinder or slave cylinder.
  3. Air in the clutch hydraulic system, leading to spongy or inconsistent pedal feel.
  4. Misadjusted clutch linkage or release mechanism.
  5. Faulty clutch pedal position sensor or related electrical issues.

Symptoms of P1859 Mitsubishi

  1. Difficulty shifting gears, especially when starting from a stop or shifting into higher gears.
  2. Grinding or rattling noises when engaging the clutch or shifting gears.
  3. Clutch slippage, where the engine revs increase without a corresponding increase in vehicle speed.
  4. Increased pedal effort required to engage or disengage the clutch.

How to Fix P1859 Mitsubishi

  1. Diagnose the specific cause of the delayed clutch disengagement by inspecting the clutch components, hydraulic system, and clutch linkage.
  2. Replace worn clutch components, such as the clutch disc, pressure plate, and release bearing, if necessary.
  3. Bleed the clutch hydraulic system to remove any air and ensure proper operation.
  4. Adjust the clutch linkage or release mechanism to ensure proper engagement and disengagement.
  5. Test drive the vehicle to verify that the clutch disengages smoothly and without delay.

Cost to Fix P1859 Mitsubishi

The typical repair costs for addressing a P1859 code related to delayed clutch disengagement can vary depending on the specific cause and the parts and labor required. In general, the cost of replacing worn clutch components, such as the clutch disc, pressure plate, and release bearing, can range from $500 to $1000 or more. Additionally, the cost of bleeding the clutch hydraulic system and adjusting the clutch linkage or release mechanism can add to the overall repair costs.

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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 P1859 Mitsubishi Code

1. What are the common symptoms of OBDII code P1859 in a Mitsubishi related to "Disengagement Too Late With Clutch 1"?

- Common symptoms include difficulty shifting gears, clutch slippage, and unusual noises during gear changes.

2. What are the possible causes of OBDII code P1859 in a Mitsubishi indicating "Disengagement Too Late With Clutch 1"?

- Possible causes may include a faulty clutch position sensor, a worn-out clutch disc, hydraulic system issues, or a malfunctioning clutch actuator.

3. How can I diagnose the OBDII code P1859 in a Mitsubishi for "Disengagement Too Late With Clutch 1"?

- Diagnosis involves checking the clutch system components for wear, inspecting the clutch position sensor, and performing a thorough examination of the hydraulic system.

4. Can driving with OBDII code P1859 in a Mitsubishi indicating "Disengagement Too Late With Clutch 1" cause further damage?

- Continuing to drive with this code present can lead to increased wear on the clutch components and potential transmission damage, so it's best to address the issue promptly.

5. What are some DIY repair tips for resolving OBDII code P1859 in a Mitsubishi related to "Disengagement Too Late With Clutch 1"?

- DIY repair tips include checking and replacing the clutch position sensor, inspecting the clutch hydraulic system for leaks, and ensuring the clutch disc is in good condition.

6. Is it recommended to reset the OBDII code P1859 in a Mitsubishi indicating "Disengagement Too Late With Clutch 1" after making repairs?

- Yes, it is advisable to clear the code after fixing the underlying issue to see if the problem reoccurs and to ensure the repair was successful.

7. How much does it typically cost to repair OBDII code P1859 in a Mitsubishi related to "Disengagement Too Late With Clutch 1" at a professional mechanic?

- Repair costs can vary depending on the specific issue but may range from $200 to $800, including parts and labor.

8. Can OBDII code P1859 in a Mitsubishi indicating "Disengagement Too Late With Clutch 1" be triggered by a simple sensor malfunction?

- Yes, a malfunctioning clutch position sensor can trigger this code, so it's important to check and replace sensors if necessary during the diagnostic process.

9. Are there any recalls or technical service bulletins related to OBDII code P1859 in Mitsubishi vehicles for "Disengagement Too Late With Clutch 1"?

- It's recommended to check with Mitsubishi dealerships or online resources for any recalls or technical service bulletins specific to this OBDII code and related issues.

10. How crucial is it to address OBDII code P1859 in a Mitsubishi indicating "Disengagement Too Late With Clutch 1" promptly?

- It is essential to address this code promptly to prevent further damage to the clutch system and transmission, ensuring the vehicle remains safe and drivable.

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