OBD Codes List

Diagnostic reference · P064B

P064B

PTO Control Module

System
Computer output circuits (P code)
Lamp
Check Engine Light
Category
Powertrain - Computer and Auxiliary Controls

What it means

P064B means PTO Control Module.

Where it lives

For P064B, the part to look at first is the module named here.

Check these first

  • A failed power take off control module
  • A wiring fault in the PTO control circuit
  • Corrosion at the PTO connector
  • A failed PTO switch or solenoid
  • A faulty ECM output

What to do next

  1. Check the PTO switch and its fuse
  2. Inspect the PTO control wiring and connector
  3. Scan the PTO module for other codes
  4. Test the PTO solenoid command
  5. Repair the control circuit if the PTO does not engage
  6. Clear the code and retest

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Updated

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