Honda Accord: Component Location Index
Eighth generation (2008–2012) / Honda Accord MK8 2008-2012 Service Manual / Fuel and Emissions / Catalytic Converter System / Component Location Index

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/Fuel Gauge Sending Unit
Replacement
1. Remove the fuel tank unit (see page 11 -320).
2. Remove the fuel level sensor (fuel gauge sending
unit) (A) from the fuel tank unit (B).
3. Check these items before installing the fuel tank ...
Control Unit Input Test
NOTE: Before testing, troubleshoot the multiplex integrated control unit
first, using B-CAN System Diagnosis Test Mode
A (see page 22-134).
Driver's MICU
1. Turn the ignition switch to LOCK (0), ...
Stall Speed Test
1. Wake sure the transmission fluid is filled to the proper
level (see page 14-191).
2. Apply the parking brake, and block all four wheels.
3. Connect the HDS to the DLC (A) located under the
...
