Fuel And Emissions - Testing & Troubleshooting

• DTC Troubleshooting Index
  • Fuel and Emissions Systems DTC Troubleshooting Index(Si) (2017 2018 2019 2020 2021)
• Learning Reset Clear
  • Fuel Learn Procedure (K20C1) (2017 2018 2019 2020 2021)
    • Procedure
• General Information
  • Fuel Line/Quick-Connect Fitting Precautions (Except K20C1)
    • Notes
    • Retainer Replacement
    • Fuel Line/Quick-Connect Fitting Removal
    • Fuel Line/Quick-Connect Fitting Installation
  • Fuel Line/Quick-Connect Fitting Precautions (K20C1) (2017 2018 2019 2020 2021)
    • Notes
    • Retainer Replacement
    • Fuel Line/Quick-Connect Fitting Removal
    • Fuel Line/Quick-Connect Fitting Installation
• Test
  • Fuel Pressure Test (Except K20C1)
    • Notes
    • Test
  • Fuel Pressure Test (K20C1) (2017 2018 2019 2020 2021)
    • Notes
    • Test
• How to Information
  • How to Troubleshoot the Fuel and Emissions Systems
    • Intermittent Failures
    • Service Information
    • Opens and Shorts
    • CHECK SYSTEM Display Indication (CHECK STARTING SYSTEM)
    • How to Use the HDS (Honda Diagnostic System)
    • If the MIL did not stay on
    • If you cannot duplicate the DTC
    • On-Board Snapshot
    • HDS Clear Command
    • Scan Tool Clear Command
    • DTC Clear
    • How to End a Troubleshooting Session (required after any troubleshooting)
    • How to Troubleshoot Circuits at the PCM Connectors
    • OBD Status
• Inspection
  • Fuel Line Inspection (Except K20C1) (2016 2017 2018)
    • Inspection
  • Fuel Line Inspection (Except K20C1) (2018 2019 2020 2021)
    • Inspection
  • Fuel Line Inspection (K20C1) (2017 2018 2019 2020 2021)
    • Inspection
• Symptom Troubleshooting
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls - Diagnostic interview
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls (K20C1) (2017 2018 2019 2020 2021)
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls (K20C2)
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls (L15B7/L15BA/L15BY)
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start (K20C1) (2017 2018 2019 2020 2021)
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start (K20C2)
  • Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start (L15B7/L15BA/L15BY)
  • Fuel and Emissions Systems Symptom Troubleshooting - Hard to start engine - Diagnostic interview
• Description & Operation
  • Fuel Supply System Description - Fuel Tank
  • Fuel Supply System Description - High Pressure Fuel Pump (With Turbocharger)
  • Fuel Supply System Description - Returnless Fuel System
  • Improvement Control in Practical Use Fuel Consumption System Description - Effective Control
  • PGM-FI System Description - A/F Sensor/HO2S Feedback Air/Fuel Ratio Control
  • PGM-FI System Description - Fuel Cut-off Control (Except Type-R)
  • PGM-FI System Description - Fuel Cut-off Control (Type-R) (2017 2018 2019 2020 2021)
• Symptom Troubleshooting Index for Viewer
  • Fuel overflows during refueling (No DTCs set) (K20C2: USA/Canada models)
  • Fuel overflows during refueling (No DTCs set) (L15B7/L15BA: USA/Canada models)
• Troubleshooting
  • Fuel Pump Circuit Troubleshooting (K20C1) (2017 2018 2019 2020 2021)
  • Fuel Pump Circuit Troubleshooting (K20C2)
  • Fuel Pump Circuit Troubleshooting (L15B7/L15BA/L15BY)
• Circuit Diagram
  • Fuel and Emissions Systems Circuit Diagram (K20C1) (2017 2018)
  • Fuel and Emissions Systems Circuit Diagram (K20C1) (2019)
  • Fuel and Emissions Systems Circuit Diagram (K20C1) (2020 2021)
  • Fuel and Emissions Systems Circuit Diagram (K20C2) (2016 2017 2018)
  • Fuel and Emissions Systems Circuit Diagram (K20C2) (2019)
  • Fuel and Emissions Systems Circuit Diagram (K20C2) (2020 2021)
  • Fuel and Emissions Systems Circuit Diagram (L15B7) (2016 2017 2018)
  • Fuel and Emissions Systems Circuit Diagram (L15B7) (2019)
  • Fuel and Emissions Systems Circuit Diagram (L15B7) (2020 2021)
  • Fuel and Emissions Systems Circuit Diagram (L15BA) (2017 2018)
  • Fuel and Emissions Systems Circuit Diagram (L15BA) (2019)
  • Fuel and Emissions Systems Circuit Diagram (L15BA) (2020 2021)
  • Fuel and Emissions Systems Circuit Diagram (L15BY) (2018)
  • Fuel and Emissions Systems Circuit Diagram (L15BY) (2019)
  • Fuel and Emissions Systems Circuit Diagram (L15BY) (2020)
  • Fuel and Emissions Systems Circuit Diagram(Si) (2017 2018)
  • Fuel and Emissions Systems Circuit Diagram(Si) (2019)
  • Fuel and Emissions Systems Circuit Diagram(Si) (2020 2021)
• Service Procedure
  • Fuel Pressure Relieving
    • Procedure
  • Fuel Tank Draining
    • Drain
  • Fuel and Emissions Systems Service Precautions
    • Fuel Flow Line Disconnection
    • Others