SpareRadar OBD-II Code Lookup

P0423

Heated Catalyst Efficiency Below Threshold Bank 1

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Code structure P0423
P
Powertrain
engine, transmission and emissions
0
Standardised
Defined by the OBD-II standard, so it means the same on any compliant vehicle.
4
2
3
Fault index
identifies the specific fault
Heated Catalyst Efficiency Below Threshold Bank 1
Powertrain Standardised
Nearby codes in the P0 range
P041F AIR System Switching Valve A Circuit Low P0420 Catalyst System Efficiency Below Threshold Bank 1 P0421 Catalyst 1 Efficiency Below Threshold Bank 1 P0422 Catalyst 2 Efficiency Below Threshold Bank 1 P0424 Heated Catalyst Temperature Below Threshold Bank 1 P0425 Catalyst Temperature Sensor Circuit Bank 1 Sensor 1 P0426 Catalyst Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1 P0427 Catalyst Temperature Sensor Circuit Low Bank 1 Sensor 1

Fault code meanings from lennykean/OBDII.DTC (master), used under the MIT licence. Copyright (c) 2023 Lenny Kean. SpareRadar is not affiliated with the dataset's authors.