Honda Fit/Jazz - DTC Troubleshooting: P0420 (67) (With ETCS)
Honda Marine Service ManualsHigh Quality Online manuals, fast download
DTC Troubleshooting: P0420 (67)
| DTC P0420: | Catalyst System Efficiency Below Threshold |
NOTE:
- If some of the DTCs listed below are stored ar the same time as DTC P0420, troubleshoot those DTCs first, then recheck for DTC P0420.
P0137, P0138, P0140: Secondary HO2S (Sensor 2)
P0141: Secondary HO2S (Sensor 2) Heater - When poor quality FUEL is used, this DTC may indicate.
| 1. | Turn the ignition switch ON (II). |
| 2. | Do the DTC CLEAR in the CLEAR MENU with the HDS. |
| 3. | Start the engine. Hold the engine speed at 3,000 rpm (min-1) with no load (in neutral) until the radiator fan comes on, then let it idle. |
| 4. | Test-drive for about 10 minutes. Then it drives, changing the vehicle speed. |
| 5. | Check the CATA MON TEMP in the DATA LIST with the HDS. Is it OK? YES - Go to Do the ETCS learn procedure. |
| 15. | Start the engine. Hold the engine speed at 3,000 rpm (min-1) with no load (in neutral) untill the radiator fan comes on, then let it idle. |
| 16. | Test-drive for about 10 minutes. Then it drives, changing the vehicle speed. |
| 17. | Check the CATA MON TEMP in the DATA LIST with the HDS. Is it OK? YES - Go to 18. NO - Go to 15 and recheck. |
| 18. | Test-drive under following conditions.
|
| 19. | Monitor the OBD STATUS for DTC P0420 in the DTCs MENU with the HDS. Is it EXECUTING? YES - Go to 20. NO - Go to 18 and recheck. |
| 20. | Test-drive continued untill a result comes on. |
| 21. | Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Are any Temporary DTCs or DTCs indicated? YES - Go to the indicated DTC troubleshooting.n NO - Go to 22. |
| 22. | Monitor the OBD STATUS for DTC P0420 in the DTCs MENU with the HDS. Is it PASSED? YES - Troubleshooting is complete.n NO - If it is FAILED, check the fuel quality. If it is EXECUTING, keep the driving condition continually untill a result comes on. If it is Out of CONDITION, go to 18 and recheck. |
Honda Marine Service ManualsHigh Quality Online manuals, fast download
