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 EXFACTORY OEM SERVICE PROCEDURE
Possible Cause
NOTE:
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- A/C pressure sensor VCC line short to power
- Accelerator pedal position (APP) sensor VCC line short to power
- EGR valve VCC line short to power
- Rocker arm oil pressure sensor VCC line short to power
- Camshaft position (CMP) sensor A VCC line short to power
- Camshaft position (CMP) sensor B VCC line short to power
- Transmission fluid pressure sensor VCC line short to power
- Fuel tank pressure sensor VCC line short to power
- A/C pressure sensor VCC line short to ground
- APP sensor VCC line short to ground
- EGR valve VCC line short to ground
- Rocker arm oil pressure sensor VCC line short to ground
- CMP sensor A VCC line short to ground
- CMP sensor B VCC line short to ground
- Transmission fluid pressure sensor VCC line short to ground
- Fuel tank pressure sensor VCC line short to ground
- EVAP leak check module internal circuit failure
- PCM internal circuit failure
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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