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Engine-Codes – Generic – C1582

C1582 Code - Assist Map Number Mismatch

Quick Answer

The C1582 diagnostic trouble code (DTC) refers to an Assist Map Number Mismatch, which indicates that there is a discrepancy between the map number stored in the vehicle's system and the actual map number of the component. Common causes include Software malfunction or calibration error within the ESC system, Faulty wheel speed sensors affecting the ESC functionality, Wiring issues or damaged connections within the ESC system. 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
C1582 indicates Assist Map Number Mismatch.
Common causes
Common causes include Software malfunction or calibration error within the ESC system, Faulty wheel speed sensors affecting the ESC functionality, Wiring issues or damaged connections within the ESC system.
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 C1582 Description

The C1582 diagnostic trouble code (DTC) refers to an Assist Map Number Mismatch, which indicates that there is a discrepancy between the map number stored in the vehicle's system and the actual map number of the component. This code is commonly associated with the vehicle's electronic stability control (ESC) system. The ESC system is responsible for helping to maintain vehicle stability and prevent skidding, especially during sudden maneuvers or slippery road conditions.

OBDII Code C1582 - Assist Map Number Mismatch
C1582 Code - Assist Map Number Mismatch

Common Causes of C1582

  1. Software malfunction or calibration error within the ESC system.
  2. Faulty wheel speed sensors affecting the ESC functionality.
  3. Wiring issues or damaged connections within the ESC system.
  4. Component failure, such as a malfunctioning ESC module or hydraulic unit.
  5. Environmental factors, such as water or debris affecting the ESC sensors.

Symptoms of C1582

  1. Illumination of the ESC warning light on the dashboard.
  2. Loss of traction control or stability assistance.
  3. Increased difficulty in maintaining control during turns or on slippery surfaces.
  4. Unusual noises coming from the ESC system.
  5. Decreased responsiveness when trying to steer or maneuver the vehicle.

How to Fix C1582

  1. Diagnose the root cause of the Assist Map Number Mismatch code using a diagnostic scanner to identify the specific component or system malfunction.
  2. Check and repair any damaged wiring or connections within the ESC system.
  3. Test and replace faulty wheel speed sensors if needed.
  4. Update or recalibrate the ESC system software to ensure proper functioning.
  5. Replace any malfunctioning ESC components, such as the module or hydraulic unit, as necessary.

Cost to Fix C1582

The cost of repairing an Assist Map Number Mismatch issue can vary depending on the specific cause of the problem and the labor rates in your area. Typically, the repair costs for this issue can range from $200 to $800, including parts and labor. However, additional costs may apply if more extensive repairs or component replacements are required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary significantly, so it's advisable to compare prices from different repair shops before proceeding with the repair.

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Code C1582 Information for Specific Makes

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 C1582 Code

1. What are the common symptoms of OBDII code C1582 (Assist Map Number Mismatch)?

- Common symptoms may include rough idling, engine misfires, reduced power, and poor fuel efficiency.

2. What can cause the OBDII code C1582 to trigger?

- The code C1582 is typically triggered when there is a mismatch between the expected and actual values of the assist map number in the vehicle's system.

3. How serious is the OBDII code C1582 (Assist Map Number Mismatch)?

- While the code itself may not directly impact the drivability of the vehicle, it is essential to address it promptly to prevent potential issues with engine performance and emissions.

4. What are some possible repair tips for resolving OBDII code C1582?

- Common repair steps include checking and recalibrating the assist map number values, inspecting for any loose connections or damaged wiring, and ensuring the integrity of related sensors.

5. Can a DIY enthusiast fix the OBDII code C1582 issue at home?

- Depending on the root cause of the code, some DIY enthusiasts may be able to address the C1582 error by following repair procedures outlined in the vehicle's service manual or using OBDII diagnostic tools.

6. Will driving with the OBDII code C1582 (Assist Map Number Mismatch) cause further damage to the vehicle?

- Continuing to drive with the C1582 code present may lead to decreased engine performance and potential long-term issues, so it is advisable to address the problem as soon as possible.

7. How can a mechanic diagnose the OBDII code C1582 accurately?

- A mechanic can use a diagnostic scanner to retrieve the specific details of the C1582 error code, inspect the related components, and perform tests to pinpoint the exact cause of the assist map number mismatch.

8. Are there any recalls or technical service bulletins related to OBDII code C1582?

- It's recommended to check with the vehicle manufacturer or authorized service centers for any recalls or technical service bulletins related to the C1582 error code for specific models.

9. How much does it typically cost to repair the OBDII code C1582?

- The cost of repairing the C1582 error code can vary depending on the underlying cause, the extent of repairs needed, labor rates, and the price of any replacement parts required.

10. Can resetting the OBDII system clear the C1582 error code?

- Resetting the OBDII system may temporarily clear the C1582 code, but if the root cause of the issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the underlying problem.

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