What's New
What changed, and when
This page logs every change to this site with the date it went live: new codes, new guides and fixes. Every code is checked against a public source before it ships, and a code that cannot be sourced does not go up.
Newest first.
This site today
- 278 codes, each with the meaning, the usual causes and the order to check
- 3 guides, listed below
- A source is recorded for every entry, kept internally so the pages stay readable
Guides on this site
Cause lists made specific to each code
October 10, 2026
The 72 codes that shared one generic cause list now carry their own. Each names the bank, cylinder, sensor or circuit its own code describes, so two Honda codes no longer read the same.
182 to 232 codes, and this page
September 29, 2026
Honda gained 50 sourced codes today, including four P10xx codes that had to be checked against the generic catalog before they could ship. This page now lists every change to the Honda site with dates, and the footer links the free tools for site owners. See it.
50 more codes and two new guides
September 26, 2026
Honda grew to 182 codes, each traced to a source. Two guides followed: Honda misfire codes and what causes them, and Honda ABS and VSA warning lights explained.
Honda VTC and VTEC codes guide
September 25, 2026
A guide to Honda variable valve timing and lift: why oil condition and oil pressure cause most of these codes, and the order to check before parts.
Severity now names the real warning lamp
September 25, 2026
Body and chassis codes used to say Check Engine Light. Airbag faults now say Airbag Light, brake faults say ABS Light, and the rest say body or chassis warning light, which is what you actually see on the dash.
Two more Honda codes
September 13, 2026
P1549 and P1731 joined the catalog with sources recorded.
The Honda site opened and grew to 120 codes
September 6, 2026
Civic, Accord, CR-V, Odyssey and Acura coverage started at 30 codes and reached 120 the same day, with no overlap against the generic catalog.
Tools for site owners
The free lookup box, for a site that wants a code search without sending readers away: the embed page. It matches your own styling and opens in a new tab, so you keep the reader.
The whole generic code list is free to reuse as CSV or JSON, and generic OBD-II codes live on OBD Codes List.