2014 Honda Ridgeline RTFACTORY OEM SERVICE PROCEDURE

DTC P0128: Cooling System Malfunction: Notes

Fig 1: Engine Coolant Temperature Of Engine Block (ECT 1) And Engine Coolant Temperature Of Radiator (ECT 2) Graph
G08569111Courtesy of AMERICAN HONDA MOTOR CO., INC.
Factory Service Tools

Use the Manual With the Right Hardware

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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.