Secondary Air Switching Valve
Directs the air pump's output into the exhaust when required and isolates it the rest of the time. May be driven electrically or by a vacuum solenoid that the module switches, which is a distinction worth holding when reading a circuit fault: the code concerns the electrical device the module drives, not necessarily the pneumatic valve it operates.
Also known as: air diverter valve, sai valve, combination valve, air switching valve, diverter valve
Referenced by 22 codes
Codes involving this component (22)
- P2440 Secondary Air Injection System Switching Valve Stuck Open Bank 1 High
- P2442 Secondary Air Injection System Switching Valve Stuck Open Bank 2 High
- P0410 Secondary Air Injection System A Moderate
- P0411 Secondary Air Injection System A Incorrect Flow Detected Moderate
- P2259 Secondary Air Injection System Control B Circuit Low Moderate
- P2260 Secondary Air Injection System Control B Circuit High Moderate
- P2430 Secondary Air Injection System Air Flow Pressure Sensor Circuit Bank 1 Moderate
- P2431 Secondary Air Injection System Air Flow Pressure Sensor Circuit Range/Performance Bank 1 Moderate
- P2435 Secondary Air Injection System Air Flow Pressure Sensor Circuit Bank 2 Moderate
- P2436 Secondary Air Injection System Air Flow Pressure Sensor Circuit Range/Performance Bank 2 Moderate
- P2441 Secondary Air Injection System Switching Valve Stuck Closed Bank 1 Moderate
- P2443 Secondary Air Injection System Switching Valve Stuck Closed Bank 2 Moderate
- P2448 Secondary Air Injection System High Air Flow Bank 1 Moderate
- P2449 Secondary Air Injection System High Air Flow Bank 2 Moderate
- P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction Low
- P0413 Secondary Air Injection System Switching Valve A Circuit Open Low
- P0414 Secondary Air Injection System Switching Valve A Circuit Shorted Low
- P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction Low
- P0416 Secondary Air Injection System Switching Valve B Circuit Open Low
- P0417 Secondary Air Injection System Switching Valve B Circuit Shorted Low
- P0491 Secondary Air Injection System Insufficient Flow — Bank 1 Low
- P0492 Secondary Air Injection System Insufficient Flow — Bank 2 Low
Other components in Exhaust and Emissions
- Oxygen Sensor 326
- EGR Valve 150
- Catalytic Converter 142
- NOx Sensor 118
- Reductant Injector 107
- Exhaust Gas Temperature Sensor 95
- Reductant Tank 95
- Diesel Particulate Filter 76
- SCR Catalyst 65
- EGR Cooler 62
- Exhaust Gas Differential Pressure Sensor 58
- Fuel Tank Pressure Sensor 58
- Exhaust Pressure Control Valve 56
- Reductant Heater 55
- Reductant Pump 51
- EVAP Vent Valve 43
- Exhaust Aftertreatment Fuel Injector 42
- Charcoal Canister 33
- EGR Position Sensor 32
- Secondary Air Injection Pump 32
- Reductant Temperature Sensor 29
- EVAP Leak Detection Pump 29
- EVAP Purge Valve 27
- Particulate Matter Sensor 24
- Reductant Control Module 24
- Reductant Level Sensor 23
- EGR Temperature Sensor 21
- Secondary Air Check Valve 21
- Catalyst Heater 20
- Catalyst Temperature Sensor 20
- Fuel Filler Cap 18
- EGR Cooler Bypass Valve 16
- Reductant Quality Sensor 16
- Exhaust Back Pressure Sensor 15
- Purge Flow Sensor 13
- Direct Ozone Reduction Catalyst 13
- EGR Vacuum Solenoid 9
- Fuel Vapour Temperature Sensor 5
- Fuel Additive Control Module 4
- Fuel Additive Tank 4
Information, not instruction
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