OBD II Fault Code

  • OBD II P27A0

OBD-II Code 4-wheel drive system is disabled is defined as a Four Wheel Drive (4WD) Range Signal Circuit High

The Four Wheel Drive Switch allows the driver to shift from 2-wheel drive to 4-wheel Low or 4-wheel high, depending on driving conditions. If the 4-Wheel Drive Switch sends back in implausible signal, code P27A0 will be set.

4-wheel drive system is disabled Symptoms

  • 4-wheel drive system is disabled

Common Problems That Trigger the P27A0 Code

  • 4-wheel drive switch failure
  • Transfer case internal failure
  • Transmission Control Module (TCM) failure
  • Wiring issue
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