Catalytic Converter System

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DTC Troubleshooting

DTC P0420: Catalyst System Efficiency Below Threshold NOTE: - Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see pa ...

See also:

Fuel Pump Circuit Troubleshooting
If you suspect a problem with the fuel pump, check that the fuel pump actually runs; when it is on, you will hear some noise if you listen to the fuel fill port with the fuel fill cap removed. The ...

Throttle Body Cleaning
Do n o t i n s e r t : your fingers into the installed throve body when you turn the ignition switch to ON (II) or while the ignition switch is in ON (II). If you do, you will seriously injure your ...

Low Oil Pressure Indicator Circuit Troubleshooting (Short)
1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3). 2. Turn the ignition switch to ON (II). 3. Make sure the HDS communicates with the vehic ...