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…
HomeP0420 · Manufacturer communications
P0420 · Manufacturer communications
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 (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.…
RAM
Reported code forms P0420-00
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a…
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
JEEP
Reported code forms P0420-00
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a condition…
JEEP
Reported code forms P0420-00
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a condition…
RAM
Reported code forms P0420-00
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a…
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…
JEEP
Reported code forms P0420
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a condition…
JEEP
Reported code forms P0420
Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a…
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.…
CHEVROLET
Reported code forms P0420
Service Engine Soon (SES) Light Comes On with DTCs P0420, P0430 Set
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.…
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…
HONDA
Reported code forms P0420
Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored. To fully…
HONDA
Reported code forms P0420
Dealer message - American Honda (AHM) is investigating certain 2010 CR-Vs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0420 (Catalyst System Efficiency Below Threshold) stored. To fully…
VOLVO BUS
Reported code forms P0420
SOFTWARE UPDATES WITH ENHANCEMENTS ARE AVAILABLE FOR THE EMS AND AFTERTREATMENT CONTROL MODULE (ACM) FOR THE VEHICLES AFFECTED BY THE BULLETIN. SOFTWARE UPDATES ARE TO RESOLVE THE FOLLOWING DIAGNOSTIC TROUBLE CODES…
CHEVROLET
Reported code forms P0420
Service Engine Soon (SES) Light Comes On with DTCs P0420, P0430 Set
VOLVO
Reported code forms P0420
VOLVO: THERE ARE ENHANCEMENTS TO SOFTWARE UPDATES FOR ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM) TO RESOLVE DIAGNOSTIC TROUBLESHOOTING CODES P1086, P0420, P205B, P2002. MODEL 2013 VAH, VHD, VN.…
MACK
Reported code forms P0420
MACK: DIAGNOSTIC TROUBLE CODES (DTCS), P1086, P0420, P205B, P202, LOW TEMPERATURE, WILL BE RESOLVED WITH SOFTWARE UPDATE ENHANCEMENTS FOR ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM). MODEL 2013…
MACK
Reported code forms P0420
MACK: UPDATE SOFTWARE INFORMATION REGARDING ENHANCEMENTS FOR ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM) ON VEHICLES WITH DIAGNOSTIC TROUBLE CODES (DTCS) P1086, P0420, P205B, P2002 AND LOW…
VOLVO BUS
Reported code forms P0420
SOFTWARE UPDATES WITH ENHANCEMENTS ARE AVAILABLE FOR THE EMS AND AFTERTREATMENT CONTROL MODULE (ACM) FOR THE VEHICLES AFFECTED BY THE BULLETIN. SOFTWARE UPDATES ARE TO RESOLVE THE FOLLOWING DIAGNOSTIC TROUBLE CODES…
VOLVO BUS
Reported code forms P0420
SOFTWARE UPDATES WITH ENHANCEMENTS ARE AVAILABLE FOR THE EMS AND AFTERTREATMENT CONTROL MODULE (ACM) FOR THE VEHICLES AFFECTED BY THE BULLETIN. SOFTWARE UPDATES ARE TO RESOLVE THE FOLLOWING DIAGNOSTIC TROUBLE CODES…
TOYOTA
Reported code forms P0420
Some 2010 model year Tacoma vehicles equipped with the 2TR-FE engine may exhibit a front exhaust pipe catalyst rattle noise and/or MIL ?ON? condition with DTC P0420 (Catalyst System Efficiency Below Threshold) stored in…
TOYOTA
Reported code forms P0420
Some 2010 model year Tacoma vehicles equipped with the 2TR-FE engine may exhibit a front exhaust pipe catalyst rattle noise and/or MIL "ON" condition with OTC P0420 (Catalyst System Efficiency Below Threshold) stored in…
CADILLAC, CHEVROLET, GMC, HUMMER
Reported code forms P0420
This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician…
CHEVROLET, GMC
Reported code forms P0420
This Preliminary Information communication provides information to the technician of additional information while diagnosing a diagnostic trouble code P0420. Check for a possible leak in the exhaust system behind the…
CHEVROLET, GMC
Reported code forms P0420
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P0420.…
CADILLAC, CHEVROLET, GMC, HUMMER
Reported code forms P0420
This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician…
CHEVROLET, GMC
Reported code forms P0420
This Preliminary Information communication provides information to the technician that engineering is asking for additional information if SI diagnosis leads to replacement of the Indirect Fuel Injector for a P0420…