P1428

DTC P1428, sometimes indicated as P142800 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the auxiliary emissions system causing egi functionality test failed.

• P1428: EGI Functionality Test Failed

These codes are commonly diagnosed with error code P1428.

• P244B [1] Diesel Particulate Filter Differential Pressure Too High Bank 1
• P244A [1] Diesel Particulate Filter Differential Pressure Too Low Bank 1
• P040B [1] Exhaust Gas Recirculation Temperature Sensor "A" Circuit Range/Performance
• P041B [1] Exhaust Gas Recirculation Temperature Sensor "B" Circuit Range/Performance
• P062F [1] Internal Control Module EEPROM Error
• P062B [1] Internal Control Module Fuel Injector Control Performance
• P060C [1] Internal Control Module Main Processor Performance
• P0422 [1] Main Catalyst Efficiency Below Threshold (Bank 1)
• P142A [1] P142A
• P20FE [1] P20FE
• P22F9 [1] P22F9
• P20EE [1] SCR NOx Catalyst Efficiency Below Threshold Bank 1