OBD Guide
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C1259

HV System Regenerative Malfunction

C1259 is an OBD-II diagnostic trouble code meaning: HV System Regenerative Malfunction. Common causes: wheel speed sensor malfunction, problems with the recuperation system control unit. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Reduced braking performance
  • Increased fuel consumption (for hybrids)
  • Low battery charge
  • Check Engine Light Illuminates

Causes

  • Wheel speed sensor malfunction
  • Problems with the recuperation system control unit
  • Broken or damaged wiring harness
  • Motor/generator malfunction
  • Battery problems

How to Fix

  1. Check error codes on other systems
  2. Diagnose wheel speed sensors
  3. Check the integrity of the wiring harness
  4. Test the recuperation system control unit
  5. Check the condition of the battery

Related codes

C1260P0A80B1422

FAQ

What does the C1259 code mean?

C1259 is an OBD-II diagnostic trouble code that indicates: HV System Regenerative Malfunction

What causes a C1259 error code?

The most common causes of C1259 include: Wheel speed sensor malfunction; Problems with the recuperation system control unit; Broken or damaged wiring harness; Motor/generator malfunction.

How do I fix a C1259 diagnostic trouble code?

To fix C1259: Check error codes on other systems. Diagnose wheel speed sensors. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1259?

Limited driving only, diagnose soon

How much does it cost to fix C1259?

The estimated repair cost for C1259 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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