OBD II Fault Code

  • OBD II P2559

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Engine Coolant Level Sensor/Switch Circuit High

The Engine Coolant Level Sensor tells the engine computer (PCM) the level of the coolant in the engine coolant system. Usually this sensor is located in the pressurized reservoir. If the level sensor sends back an implausible signal, code P2559 will be set.

Common Problems That Trigger the P2559 Code

  • Coolant level sensor failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue
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