Element 2WD L4-2.4L (2003)
Catalytic Converter: Technical Service Bulletins
Engine Controls - DTC P0420 Service Manual Revision
SOURCE:
Honda Service News July 2004
TITLE:
S/M Fix: DTC P0420 Troubleshooting
APPLIES TO:
2003-04 Accord, 2003-04 Element
SERVICE TIP:
The troubleshooting procedure for DTC P0420 (catalyst system efficiency below threshold) in the 2003-04 Accord S/M and the 2003-04 Element S/M is
wrong. It was written before we had the current software problem and the updated software to correct this DTC. Make this change in your copies of the
appropriate S/M:
20030-4 Accord
Page 11-245, step 9: Change the text to read: Update the ECM/PCM software using the Honda Interface Module (HIM). Refer to Service Bulletin
03-063 for specific model application and procedural information.
2003-04 Element
Page 11-219, step 9: Change the text to read: Update the ECM/PCM software using the Honda Interface Module (HIM). Refer to Service Bulletin
03-031 for specific model application and procedural information.
Don't replace the catalytic converter unless the software has already been updated and DTC P0420 sets again; doing so wouldn't provide a lasting repair
and could result in a warranty debit.
