Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Honda Insight TouringFACTORY OEM SERVICE PROCEDURE
Operating Condition
- Enter the maintenance mode, then start the engine. Hold the engine speed [Engine Speed] at 3000 RPM without load (in P or N) until the radiator fan comes on.
- Drive at a steady speed between 15 - 75 mph (25 - 120 km/h) for at least 15 minutes, and watch the long term fuel trim. If the long term fuel trim stays at about 1, the vehicle is OK or it is a very minor problem. If a significant fault is still present, the long term fuel trim will move up or down while driving.
- When freeze data is stored, drive the vehicle under those conditions instead of Driving Pattern step 2.
- After clearing the DTC by disconnecting the 12 volt battery or using the scan tool, drive at steady speed between 15 - 55 mph (25 - 88 km/h) for at least 40 minutes to allow time for long term fuel trim to recover.
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.
[ ]: HDS Parameter
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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