OBD Guide
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P1D86

Traction Motor Inverter Module Malfunction Signal Line Hi

P1D86 is an OBD-II diagnostic trouble code meaning: Traction Motor Inverter Module Malfunction Signal Line Hi. Common causes: traction motor inverter module malfunction, damage to wiring or connectors. Estimated repair cost: $167–556.

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

Symptoms

  • Reduced motor power
  • Check Engine Light Illuminates
  • Incorrect operation of the hybrid system
  • Increased fuel consumption (for hybrids)
  • The car goes into emergency mode

Causes

  • Traction motor inverter module malfunction
  • Damage to wiring or connectors
  • Noise on the signal line
  • Software glitch
  • Grounding problems

How to Fix

  1. Check the condition of the wiring and connectors
  2. Check inverter module grounding
  3. Update module software
  4. Check and, if necessary, replace the inverter module
  5. Repair only from an authorized dealer

Related codes

P1D85P1D87P1D88

FAQ

What does the P1D86 code mean?

P1D86 is an OBD-II diagnostic trouble code that indicates: Traction Motor Inverter Module Malfunction Signal Line Hi

What causes a P1D86 error code?

The most common causes of P1D86 include: Traction motor inverter module malfunction; Damage to wiring or connectors; Noise on the signal line; Software glitch.

How do I fix a P1D86 diagnostic trouble code?

To fix P1D86: Check the condition of the wiring and connectors. Check inverter module grounding. Update module software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1D86?

Limited driving only, diagnose soon

How much does it cost to fix P1D86?

The estimated repair cost for P1D86 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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