| P0419 |
P0419 |
BMW |
Secondary Air Injection System Control "B" Circuit |
| P0420 |
P0420 |
BMW |
Catalyst System Efficiency Below Threshold |
| P0421 |
P0421 |
BMW |
Warm Up Catalyst Efficiency Below Threshold |
| P0422 |
P0422 |
BMW |
Main Catalyst Efficiency Below Threshold |
| P0423 |
P0423 |
BMW |
Heated Catalyst Efficiency Below Threshold |
| P0424 |
P0424 |
BMW |
Heated Catalyst Temperature Below Threshold |
| P0425 |
P0425 |
BMW |
Catalyst Temperature Sensor |
| P0426 |
P0426 |
BMW |
Catalyst Temperature Sensor Range/Performance |
| P0427 |
P0427 |
BMW |
Catalyst Temperature Sensor Low |
| P0428 |
P0428 |
BMW |
Catalyst Temperature Sensor High |