HomeP0420 · Manufacturer communications

P0420 · Manufacturer communications

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

P0420 →

ATI&12022024909

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…

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ATI&11052024902

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…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored. To fully…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM)is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL)on with the DTC P0420 (Catalyst System Efficiency Below Threshold)stored. To…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM)is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL)on with the DTC P0420 (Catalyst System Efficiency Below Threshold)stored. To…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored.…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored.…

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IN-19-06

HONDA

Reported code forms P0420

HONDA: INFORMATION PROVIDED CONCERNING AN INVESTIGATION, ON CERTAIN VEHICLES, OF THE CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (DTC P0420) WITH MALFUNCTION INDICATOR LAMP (MIL) ON AND EITHER COLLECT SPECIFIC PARTS OR…

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HONDA

Reported code forms P0420

Engineering request for investigation - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency…

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HONDA

Reported code forms P0420

Engineering request for investigation - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4 with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency…

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4s with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored.…

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IN-4-18-14

HONDA

Reported code forms P0420

HONDA: SOME VEHICLES MAY EXPERIENCE A MALFUNCTION WITH THE CATALYST SYSTEM. MALFUNCTION INDICATOR LAMP DTC P0420 MAY BE STORED. AMERICAN HONDA IS ATTEMPTING TO INSPECT THE VEHICLE BEFORE ANY REPAIRS HAVE MADE. *JS

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HONDA

Reported code forms P0420

Dealer message - American Honda (AHM)is investigating certain 2010 CR-Vs & Accord L4s with a complaint of the Malfunction Indicator Lamp (MIL)on with the DTC P0420 (Catalyst System Efficiency Below Threshold)stored. To…

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DLR MSG - RFP -

HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4s with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored.…

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DLR MSG - RFP -

HONDA

Reported code forms P0420

Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs & Accord L4s with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored.…

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HONDA

Reported code forms P0420

Service bulletin - The MIL is on with DTC P0420 or DTC P0430 (catalyst system efficiency below threshold) with a possible DTC P2243 or DTC P2247 (A/F sensor 1 circuit high voltage). One or both primary A/F Sensor (Air…

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03063

HONDA

Reported code forms P0420

MALFUNCTION INDICATOR LAMP COMES ON WITH DIAGNOSTIC TROUBLE CODE (DTC) P0420. *TT

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604

HONDA

Reported code forms P0420

UPDATE ECM/PCM FOR DIAGNOSTIC TROUBLE CODE P0420, CATALYST BELOW THRESHOLD. *NM

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1203

HONDA

Reported code forms P0420

DIAGNOSTIC TROUBLE CODE P0420 AND/OR P0430, CATALYST EFFICIENCY (V6). *NM

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03073

HONDA

Reported code forms P0420

MALFUNCTION INDICATOR LAMP IS ON WITH DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD) IS STORED. *TT *MJ

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