OBD Codes List

Diagnostic reference · P0A90

P0A90

Drive Motor A Performance

System
Powertrain control (P code)
Lamp
Check Engine Light
Category
Powertrain - Hybrid Propulsion

What it means

P0A90 means Drive Motor A Performance.

Check these first

  • Worn motor A bearings
  • Motor A overheating from a coolant leak or clogged passage
  • A motor control module fault
  • Physical damage to motor A

What to do next

  1. Read drive motor A data on a scan tool
  2. Listen for bearing noise from motor A
  3. Check motor A cooling for leaks or blockages
  4. Inspect motor A for physical damage
  5. Replace motor A if performance is off spec
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.