| P0413 | Secondary Air Injection System Switching Valve "A" Circuit Open | Check the Secondary Air Injection (AIR) Pump Relay J299. Refer to --> Secondary Air Injection (AIR) Pump Relay J299 , Checking . | Open circuit | | 0.5 Seconds | 2 DCY |
| P0414 | Secondary Air Injection System Switching Valve "A" Circuit Shorted | Check the Secondary Air Injection (AIR) Pump Relay J299. Refer to --> Secondary Air Injection (AIR) Pump Relay J299 , Checking . | Short to ground Short to B + | | 0.5 Seconds | 2 DCY |
| P0418 | Secondary Air Injection System Control "A" Circuit | Check the Secondary Air Injection (AIR) Pump Relay J299. Refer to --> Secondary Air Injection (AIR) Pump Relay J299 , Checking . | Open circuit | | 0.5 Seconds | 2 DCY |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) | Check the Heated Oxygen Sensor (HO2S) G39. Refer to Heated Oxygen Sensor (HO2S) G39 , Checking . Check the Heated Oxygen Sensor (HO2S) 2 G108. Refer to Heated Oxygen Sensor (HO2S) 2 G108 , Checking . Check the oxygen sensors behind Three Way Catalytic Converter (TWC). Refer to --> Oxygen Sensor Heater behind Three Way Catalytic Converter (TWC) , Checking . Check the Three Way Catalytic Converter (TWC). | AR 1 Ratio 0.20 | Catalyst temperature, 300°C x 700°C EVAP purge flow, 0.5 Engine start temp, > -9.7°C Engine speed, 1080-2600 RPM Engine load, 22 65% Lambda control front and rear, closed loop | 150 Seconds | Once/DCY 2 DCY |
| P0430 | Catalyst System Efficiency Below Threshold Bank 2 | Check the Heated Oxygen Sensor (HO2S) G39. Refer to Heated Oxygen Sensor (HO2S) G39 , Checking . Check the Heated Oxygen Sensor (HO2S) 2 G108. Refer to Heated Oxygen Sensor (HO2S) 2 G108 , Checking . Check the oxygen sensors behind Three Way Catalytic Converter (TWC). Refer to --> Oxygen Sensor Heater behind Three Way Catalytic Converter (TWC) , Checking . Check the Three Way Catalytic Converter (TWC). | AR 1 Ratio 0.20 | Catalyst temperature, 300°C x700°C EVAP purge flow, 0.5 Engine start temp, > -9.7°C Engine speed, 1080-2600 RPM Engine load, 22 65% Lambda control front and rear, closed loop | 150 Seconds | Once/DCY 2 DCY |
| P0441 | Evaporative Emission System Incorrect Purge Flow | Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80. Refer to --> Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking . Check the Leak Detection Pump (LDP) V144. Refer to --> Leak Detection Pump (LDP) V144 , Checking . Check the Evaporative Emission (EVAP) Canister System for proper seal. Refer to --> Evaporative Emission (EVAP) System, Leak Checking . | No Lambda deviation or reduction of bypass airflow + 7% of lambda deviation and purge valve quality 35% (Airflow, ignition timing) | Engine speed, Idle Altitude, 2800 M Time after engine start, >550 S ECT, > 60°C Or Substitute temperature, > 60°C Lambda Control, Closed Loop Lambda Control, Within sufficient range: not at max-threshold value and not at min + threshold value Delta engine speed 100/min | 30 Seconds | Once/DCY 2 DCY |
| P0442 | Evaporative Emission System Leak Detected (Small Leak) | Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80. Refer to --> Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking . Check the Leak Detection Pump (LDP) V144. Refer to --> Leak Detection Pump (LDP) V144 , Checking . Check the Evaporative Emission (EVAP) Canister System for proper seal. Refer to --> Evaporative Emission (EVAP) System, Leak Checking . | Time for pressure drop 1.5-2.3 Sec. | EVAP purge valve, Closed LDP, Activated Altitude, 2600 m IAT, 5.3-60°C Time after engine start, >7-1200 sec. Intake Manifold Vacuum, >150 mbar Engine temp, 5.399.8°C Restart temp. difference, >45K Vehicle speed, >5km/h Delta Ambient Press. 3 mbar Negative air temp. gradient after start, 5°C | 150 Seconds | Once/DCY 2 DCY |
| P0444 | Evaporative Emission System Purge Control Valve Circuit Open | Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80. Refer to --> Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking . Check the Leak Detection Pump (LDP) V144. Refer to --> Leak Detection Pump (LDP) V144 , Checking . Check the Evaporative Emission (EVAP) Canister System for proper seal. Refer to --> Evaporative Emission (EVAP) System, Leak Checking . | Open circuit | EVAP purge, Activated | 0.5 Seconds | 2 DCY |
| P0455 | Evaporative Emission System Leak Detected (gross leak/no flow) | Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80. Refer to --> Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking . Check the Leak Detection Pump (LDP) V144. Refer to --> Leak Detection Pump (LDP) V144 , Checking . Check the Evaporative Emission (EVAP) Canister System for proper seal. Refer to --> Evaporative Emission (EVAP) System, Leak Checking . | Short to ground Short to battery + Pressure drop within predetermined time 1.15 sec. | EVAP purge valve, Activated EVAP purge valve, Closed LDP, Activated Altitude, 2600 m IAT, 5.3-60°C Time after engine start, >7-1200 sec. Intake Manifold Vacuum, 3 mbar Engine temp, 5.3 99.8°C | 0.5 Seconds 200 Seconds | 2 DCY Once/DCY |
| P0456 | Evaporative Emission System Leak Detected (very small leak) | Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80. Refer to --> Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking . Check the Leak Detection Pump (LDP) V144. Refer to --> Leak Detection Pump (LDP) V144 , Checking . Check the Evaporative Emission (EVAP) Canister System for proper seal. Refer to --> Evaporative Emission (EVAP) System, Leak Checking . | Pressure drop within predetermined time 4.2 5.5 sec. | EVAP purge valve, Closed LDP, Activated Altitude, 2600 m IAT, 5.3-50.3°C Time after engine start, >7-1200 sec. Intake Manifold Vacuum >150 mbar Engine temp, 5.3-95.3°C Restart temp. difference, >54.8K Vehicle speed, >5-120 km/h Vehicle acceleration, > - 2.8 m/s2 and 2.8 m/s2 Engine load change, > - 8 %/seg and 8 %/seg Delta Ambient Press. 3 mbar Negative air temp. gradient after start, 5°C | 150 Seconds | Once/DCY 2 DCY |
| P0491 | Secondary Air Injection System Insufficient Flow Bank 1 | Check the Secondary Air System for proper seal. Refer to --> Combination Valve for Secondary Air Injection (AIR), Checking Function and Proper Seal . Check the Secondary Air Injection (AIR) Pump Relay J299. Refer to --> Secondary Air Injection (AIR) Pump Relay J299 , Checking . | Flow 75% | IAT, 5.380°C Lambda control, Closed loop Engine speed, Idle Oxygen sensor front, Checked and no fault Altitude, 2800 m ECT, 20.3°C-105°C Engine restart temperature difference, >15°C Time after engine start, 420 sec. Air mass, 7 kg/h> x50 kg/h Model catalyst temp, 700°C | 60 Seconds | Once/DCY 2 DCY |
| P0492 | Secondary Air Injection System Insufficient Flow Bank 2 | Check the Secondary Air System for proper seal. Refer to --> Combination Valve for Secondary Air Injection (AIR), Checking Function and Proper Seal . Check the Secondary Air Injection (AIR) Pump Relay J299. Refer to --> Secondary Air Injection (AIR) Pump Relay J299 , Checking . | Flow 75% | IAT, 5.380°C Lambda control, Closed loop Engine speed, Idle Oxygen sensor front, Checked and no fault Altitude, 2800 m ECT, 20.3°C 105°C Engine restart temperature difference, >15°C Time after engine start, 420 sec. Air mass, 7 kg/h> x50 kg/h Model catalyst temp, 700°C | 60 Seconds | Once/DCY 2 DCY |
