Code 14 - Coolant Sensor Shorted

1985 Chevrolet Camaro Z28, 5.0 H, StandardSECTION Code 14 - Coolant Sensor Shorted

Code 14 means the ECM has seen low resistance of the coolant sensor circuit as high engine temperature, or low voltage at ECM terminal "3", for a time longer than specified.

NOTE: The following step numbers refer to the numbers in the accompanying flow chart(s).
  1. This test determines whether fault is in sensor or circuit. Normal circuit voltage is about 5 volts.
    NOTE: Coolant sensor IS NOT connected during this test.
  2. Checks for ground between ECM and coolant sensor. Test light to battery positive will be "OFF" in an ungrounded circuit.
Fig 1: Code 14, Coolant Sensor Shorted - Flow Chart
G9306
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.