P21xx · Fuel and air metering

P21B4 NOx Adsorber Over Temperature (Bank 1) Powertrain P21B5 NOx Adsorber Over Temperature (Bank 2) Powertrain P21B6 Cold Start Cylinder 1 Injection Timing Powertrain P21B7 Cold Start Cylinder 2 Injection Timing Powertrain P21B8 Cold Start Cylinder 3 Injection Timing Powertrain P21B9 Cold Start Cylinder 4 Injection Timing Powertrain P21BA Cold Start Cylinder 5 Injection Timing Powertrain P21BB Cold Start Cylinder 6 Injection Timing Powertrain P21BC Cold Start Cylinder 7 Injection Timing Powertrain P21BD Cold Start Cylinder 8 Injection Timing Powertrain P21BE Cold Start Cylinder 9 Injection Timing Powertrain P21BF Cold Start Cylinder 10 Injection Timing Powertrain P21C0 Cold Start Cylinder 11 Injection Timing Powertrain P21C1 Cold Start Cylinder 12 Injection Timing Powertrain P21C2 Reductant Heater Relay Control Circuit/Open Powertrain P21C3 Reductant Heater Relay Control Circuit Low Powertrain P21C4 Reductant Heater Relay Control Circuit High Powertrain P21C5 Reductant Level Sensor A Stuck Powertrain P21C6 Reductant Level Sensor B Stuck Powertrain P21C7 Reductant Control Module Power Relay Control Circuit/Open Powertrain P21C8 Reductant Control Module Power Relay Control Circuit Low Powertrain P21C9 Reductant Control Module Power Relay Control Circuit High Powertrain P21CA Reductant Control Module Supply Voltage Circuit Powertrain P21CB Reductant Control Module Supply Voltage Low Powertrain P21CC Reductant Control Module Supply Voltage High Powertrain P21CD Reductant Quality Module Supply Voltage Low Powertrain P21CE Reductant Quality Module Performance Powertrain P21CF Cylinder 1 Injector B Circuit/Open Powertrain P21D0 Cylinder 2 Injector B Circuit/Open Powertrain P21D1 Cylinder 3 Injector B Circuit/Open Powertrain P21D2 Cylinder 4 Injector B Circuit/Open Powertrain P21D3 Cylinder 5 Injector B Circuit/Open Powertrain P21D4 Cylinder 6 Injector B Circuit/Open Powertrain P21D5 Cylinder 7 Injector B Circuit/Open Powertrain P21D6 Cylinder 8 Injector B Circuit/Open Powertrain P21D7 Cylinder 9 Injector B Circuit/Open Powertrain P21D8 Cylinder 10 Injector B Circuit/Open Powertrain P21D9 Cylinder 11 Injector B Circuit/Open Powertrain P21DA Cylinder 12 Injector B Circuit/Open Powertrain P21DB Cylinder 1 Injector B Circuit Low Powertrain P21DC Cylinder 1 Injector B Circuit High Powertrain P21DD Reductant Heater A Current Too Low Powertrain P21DE Cylinder 2 Injector B Circuit Low Powertrain P21DF Cylinder 2 Injector B Circuit High Powertrain P21E0 Cylinder 3 Injector B Circuit Low Powertrain P21E1 Cylinder 3 Injector B Circuit High Powertrain P21E2 Cylinder 4 Injector B Circuit Low Powertrain P21E3 Cylinder 4 Injector B Circuit High Powertrain P21E4 Cylinder 5 Injector B Circuit Low Powertrain P21E5 Cylinder 5 Injector B Circuit High Powertrain P21E6 Cylinder 6 Injector B Circuit Low Powertrain P21E7 Cylinder 6 Injector B Circuit High Powertrain P21E8 Cylinder 7 Injector B Circuit Low Powertrain P21E9 Cylinder 7 Injector B Circuit High Powertrain P21EA Cylinder 8 Injector B Circuit Low Powertrain P21EB Cylinder 8 Injector B Circuit High Powertrain P21EC Cylinder 9 Injector B Circuit Low Powertrain P21ED Cylinder 9 Injector B Circuit High Powertrain P21EE Cylinder 10 Injector B Circuit Low Powertrain P21EF Cylinder 10 Injector B Circuit High Powertrain