Fault code lookup

Results for “P042”

Fault codes 21

Results match keywords in the stored descriptions. Codes you typed are shown first.

CodeDescriptionBrandsSystem
P0420Catalyst System Efficiency Below Threshold (Bank 1)42Powertrain
P0421Warm Up Catalyst Efficiency Below Threshold (Bank 1)31Powertrain
P0422Main Catalyst Efficiency Below Threshold (Bank 1)33Powertrain
P0423Heated Catalyst Efficiency Below Threshold (Bank 1)26Powertrain
P0424Heated Catalyst Temperature Below Threshold (Bank 1)23Powertrain
P0425Catalyst Temperature Sensor Circuit (Bank 1 Sensor 1)27Powertrain
P0426Catalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)26Powertrain
P0427Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 1)28Powertrain
P0428Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 1)28Powertrain
P0429Catalyst Heater Control Circuit/Open (Bank 1)26Powertrain
Show 11 more matches on this page
CodeDescriptionBrandsSystem
P042ACatalyst temperature sensor circuit bank 1 sensor 223Powertrain
P042BCatalyst temperature sensor circuit range/performance bank 1 sensor 222Powertrain
P042CCatalyst temperature sensor circuit low bank 1 sensor 222Powertrain
P042DCatalyst temperature sensor circuit high bank 1 sensor 222Powertrain
P042EEGR 'A' control stuck open30Powertrain
P042FEGR 'A' control stuck closed30Powertrain
P042000Der Wirkungsgrad des Katalysators (Zylinderreihe 1) ist nicht ausreichend.4Powertrain
P042100DOC light off1Powertrain
P042627Der Temperatursensor 1 'Katalysator' (Zylinderreihe 1) hat Funktionsstörung.Signaländerungsrate ist oberhalb des zulässigen Grenzwertes.1Powertrain
P042700Temperature sensor 1 'Catalytic converter' (cylinder bank 1) has a short circuit to ground.1Powertrain
P042800Temperature sensor 1 'Catalytic converter' (cylinder bank 1) has a short circuit to positive.1Powertrain
CodeDescriptionBrandsSystem
P042ACatalyst temperature sensor circuit bank 1 sensor 223Powertrain
P042BCatalyst temperature sensor circuit range/performance bank 1 sensor 222Powertrain
P042CCatalyst temperature sensor circuit low bank 1 sensor 222Powertrain
P042DCatalyst temperature sensor circuit high bank 1 sensor 222Powertrain
P042EEGR 'A' control stuck open30Powertrain
P042FEGR 'A' control stuck closed30Powertrain
P042000Der Wirkungsgrad des Katalysators (Zylinderreihe 1) ist nicht ausreichend.4Powertrain
P042100DOC light off1Powertrain
P042627Der Temperatursensor 1 'Katalysator' (Zylinderreihe 1) hat Funktionsstörung.Signaländerungsrate ist oberhalb des zulässigen Grenzwertes.1Powertrain
P042700Temperature sensor 1 'Catalytic converter' (cylinder bank 1) has a short circuit to ground.1Powertrain
P042800Temperature sensor 1 'Catalytic converter' (cylinder bank 1) has a short circuit to positive.1Powertrain
Advanced: scanner vehicle and live-data matches

Vehicles 8

Vehicle data covers only some brands. These matches come from scanner data, not from a full vehicle index, so treat them as approximate.

BrandModel / variantDetails
HondaThis test is used for the confirmation step for and P042Fcode P042E
ProtonThis test is used for the confirmation step for and P042Fcode P042E
HondaThis test is used for the confirmation step for P042E andcode P042F
ProtonThis test is used for the confirmation step for P042E andcode P042F
Ford1998 EXPLORER: DRIVEABILITY - MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED - DIAGNOSTIC TROUBLE CODES (DTCs) P0420 AND/ORcode P0430
Mazda1998 EXPLORER: DRIVEABILITY - MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED - DIAGNOSTIC TROUBLE CODES (DTCs) P0420 AND/ORcode P0430
FordIf the DTC or P042F is not present, do not replace the EGR(Exhaust Gas Recirculation) valve. Further diagnosis is necessarycode P042E
MazdaIf the DTC or P042F is not present, do not replace the EGR(Exhaust Gas Recirculation) valve. Further diagnosis is necessarycode P042E

Live data 0

No matching live-data parameters.

These tables come from diagnostic data. They are useful for advanced users and can be ignored for a normal code lookup.

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