2020 Honda Fit EXFACTORY OEM SERVICE PROCEDURE

PCM Reset (PGM-FI System): Procedure

  1. HDS - Connect
    GHH81018Courtesy of HONDA, U.S.A., INC.
    1. Turn the vehicle to the ON mode, but do not start the engine.

    2. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.

    3. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting .

  2. PCM - Reset
    Β  1. Select the PGM-FI system with the HDS

    2. Reset the PCM with the HDS while the engine is stopped

    3. Turn the vehicle to the OFF (LOCK) mode

    4. Turn the vehicle to the ON mode, and wait 30 seconds

    5. Turn the vehicle to the OFF (LOCK) mode, and disconnect the HDS from the DLC.

    Fuel and Emissions Systems Learning ProcedureΒ 

  3. PCM - Idle LearnΒ 

    Transmission Systems Learning Procedure (CVT)Β 

  4. CVT System - Learn
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.