Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
HONDA
Reported code forms P0420
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on…
HONDA
Reported code forms P0420
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on…
HONDA
Reported code forms P0420
PRODUCT UPDATE: ECM UPDATE TO PREVENT CATALYST DTC P0420 AND/OR VPS DTC P1021, MCM UPDATE TO CURRENT SPECIFICATIONS. *TT
HONDA
Reported code forms P0420
MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0420 OR ENGINE PING UNDER LOAD. *TT
HONDA
Reported code forms P0420
REPLACE THE CORRECT THREE WAY CATALYTIC CONVERTER FOR DTC P0420 P01420 P2000. *EH
HONDA
Reported code forms P0420
DIAGNOSTIC TROUBLE CODE P0420 AND P1420 REPAIRS. *TT
HONDA
Reported code forms P0420
DIAGNOSTIC TROUBLE CODE P0420 AND DATA RECORDER INSTALLATION. INVESTIGATION OF 2001-2003 CIVICS WITH THE MALFUNCTION INDICATOR LIGHT (MIL) ON AND DIAGNOSTIC TROUBLE CODE (DTC) P0420 STORED. *NM
HONDA
Reported code forms P0420
(COMPLETE) DISTRIBUTOR ASSEMBLY. HESITATION, PINGING AND/OR REPEAT DIAGNOSTIC TROUBLE CODE P0420 (CATALYST) PROBLEMS. REQUEST FOR PARTS. *TT
HONDA
Reported code forms P0420
SUBJECT REGARDING DIAGNOSTIC TROUBLE CODE P9999 PROBABLY BEING DIAGNOSTIC TROUBLE CODE P0420. *SLC