OBD2 Sensors >> Catepillar C15 I6 Engine Sensor Locations

C15 ACERT Engine Driver Side
C15 ACERT Engine showing ECT location
  1. Fuel injectors (under valve cover center of cylinder head)
  2. Camshaft position sensor (CMP) (located on side at top of timing cover)
  3. Oil pressure sensor (driver’s side of engine block)
  4. Fuel Temp Sensor (on top of fuel filter near primer pump)
  5. Crankshaft position sensor (CKP) (located at bottom side of timing cover)
  6. Engine coolant temperature sensor (ECT) (located next to thermostat housing)
  7. Accelerator Pedal Position Sensor (APP) (attached to accelerator pedal)
  8. Boost Pressure Sensor (attached to intake manifold)
  9. Inlet Air Temp Sensor (attached near air inlet on intake manifold)
  10. Atmospheric Pressure Sensor (driver’s side of cylinder block)

Models Found on Caterpillar Agricultural/Industrial applications as well as HD: (1999 and later)

  • Kenworth
  • Peterbilt
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