OBD Guide
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C1582

Assist Map Number Mismatch

C1582 is an OBD-II diagnostic trouble code meaning: Assist Map Number Mismatch. Common causes: incorrect programming of the control unit, data corruption in block memory. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine or ABS/ESP light is on
  • Reduced efficiency of the ESP or ABS system
  • Incorrect operation of the braking assistance system

Causes

  • Incorrect programming of the control unit
  • Data corruption in block memory
  • Wiring Harness Problems
  • Malfunction of ABS or ESP sensors

How to Fix

  1. Check the wiring harness for damage
  2. Diagnostics of ABS/ESP sensors
  3. Reflashing the control unit
  4. Replacing the control unit (if necessary)

Related codes

C1210C1223C1234

FAQ

What does the C1582 code mean?

C1582 is an OBD-II diagnostic trouble code that indicates: Assist Map Number Mismatch

What causes a C1582 error code?

The most common causes of C1582 include: Incorrect programming of the control unit; Data corruption in block memory; Wiring Harness Problems; Malfunction of ABS or ESP sensors.

How do I fix a C1582 diagnostic trouble code?

To fix C1582: Check the wiring harness for damage. Diagnostics of ABS/ESP sensors. Reflashing the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1582?

Limited driving only, diagnose soon

How much does it cost to fix C1582?

The estimated repair cost for C1582 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat