P1285 Acura Cylinder head over temp sensed

P1285 Acura Cylinder head over temp sensed

Possible causes
  • Low engine coolant level.
  • Base engine concerns.
  • Engine cooling system concerns.
  • CHT sensor concern.
    • Tech description
    On some applications when this fault occurs the Engine Temperature warning indicator will illuminate and/or force the temperature gauge to the full H (hot) zone. The warning indicator can be triggered by either grounding the engine temperature warning circuit when wired to the PCM, or by sending a PCM network message to the instrument cluster.
    Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1285 Acura Description

    Indicates an engine overheat condition was sensed by the Cylinder Head Temperature (CHT) sensor.

    Acura Vehicle:

    Acura ILX, Acura MDX, Acura RDX, Acura RLX, Acura TL, Acura TSX, Acura ZDX, Acura CSX, Acura EL, Acura Integra, Acura RSX, Acura Legend, Acura Vigor, Acura CL, Acura SLX, Acura NSX, Acura RL, Acura ZDX