636 5

UnclassifiedCooling

What This Code Means

Ground error; Common rail pressure sensor issue; Ambient temperature sensor issue; Fuel temperature sensor issue; Oil temperature sensor issue; Crankshaft position sensor issue; Engine Control Unit CAN 2 issue; Camshaft position sensor issue

Possible Causes

  • Ground error
  • Open circuit
  • Open circuit in camshaft position sensor
  • Short circuit
  • Short circuit to battery
  • Short circuit to battery in camshaft position sensor
  • Short circuit to battery or open circuit
  • Short circuit to ground
  • Short circuit to ground or open circuit
  • Supply voltage out of range

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 636 5 on your specific Rehlko unit — cited to the OEM manual, not a forum guess.

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