Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
ACURA
Reported code forms P0420
Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2015-2019 TLXs with a client complaint of the Malfunction Indicator Lamp (MIL) on with DTC P0420 (Rear Bank Catalyst System Efficiency Below…
BUICK, CHEVROLET
Reported code forms P0420
This bulletin provides a procedure to reprogram the ECM to correct a condition of MIL On, DTC P0420 Set.
ACURA
Reported code forms P0420
Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2015-2019 TLXs with a client complaint of the Malfunction Indicator Lamp (MIL) on with DTC P0420 (Rear Bank Catalyst System Efficiency Below…
FORD
Reported code forms P0420
Some 2016-2018 Police Interceptor Sedan vehicles equipped with a 3.7L Twin independent Variable Camshaft Timing (TiVCT) engine may exhibit an illuminated MIL with DTC P0420 and/or P0430. Follow the Service Procedure…
HONDA
Reported code forms P0420
Customer letter - In some cases, the electronic control module (ECM) misinterprets sensor inputs as a warm-up three-way catalytic converter (TWC) deterioration and turns the malfunction indicator lamp (MIL) on with…
HONDA
Reported code forms P0420
Customer letter - In some cases, the electronic control module (ECM) misinterprets sensor inputs as a warm-up three-way catalytic converter (TWC) deterioration and turns the malfunction indicator lamp (MIL) on with…
LAND ROVER
Reported code forms P0420-00
Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also…
LAND ROVER
Reported code forms P0420-00
Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also…
HONDA
Reported code forms P0420
Dealer message - Today, June 21, 2018, American Honda is announcing a Warranty Extension for 2006-07 Accord Hybrid vehicles to address the MIL illuminating with DTC P0420 or P0430. Basic Problem - The ECM may…
HONDA
Reported code forms P0420
Service bulletin - In some cases, the ECM misinterprets sensor inputs as a warm-up three-way catalytic converter (TWC) deterioration and turns the MIL on with DTC P0420 or DTC P0430 (catalyst system efficiency below…
HONDA
Reported code forms P0420
Service bulletin - In some cases, the ECM misinterprets sensor inputs as a warm-up three-way catalytic converter (TWC) deterioration and turns the MIL on with DTC P0420 or DTC P0430 (catalyst system efficiency below…
VOLVO
Reported code forms P0420
Volvo Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16 And US17+OBD18 (GHG17) Emissions (Common Rail Fuel System) - Commonly Model Years 2018 And 2019
MACK
Reported code forms P0420
Mack Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16 And US17+OBD18 (GHG17) Emissions (Common Rail Fuel System) - Commonly Model Years 2018 And 2019
NISSAN
Reported code forms P0420
2016 TITAN XD; MIL ON WITH DTC P0420 IF YOU CONFIRM The MIL is ?ON? with DTC P0420 (Catalyst System Efficiency Below Threshhold Bank 1), AND There are no drivability issues. ACTION 1. Save Computer Data with CONSULT-III…
VOLVO
Reported code forms P0420
Volvo Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16 And US17+OBD18 (GHG17) Emissions (Common Rail Fuel System) - Commonly Model Years 2018 And 2019
MACK
Reported code forms P0420
Mack Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16 And US17+OBD18 (GHG17) Emissions (Common Rail Fuel System) - Commonly Model Years 2018 And 2019
HONDA
Reported code forms P0420
Service bulletin - The MIL is on and DTC P0420 (catalyst system efficiency below threshold) is set. Faulty fuel injectors in one or more cylinders may be affecting combustion and causing a false DTC P0420.
MACK
Reported code forms P0420
Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel System) Chassis ONLY
VOLVO
Reported code forms P0420
Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel System) Chassis ONLY
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
CADILLAC, CHEVROLET
Reported code forms P0420
Exhaust Smell and/or Leak with Possible Malfunction Indicator Lamp Illuminated Condition Some customers may comment on an exhaust smell and/or leak with possible malfunction indicator lamp illuminated. During diagnosis,…
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM, MIL-on P0463 and B103E1B stored
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM
VOLKSWAGEN
Reported code forms P0420
MIL-on P0420 and/or P0430 in the ECM