Secondary Air Injection Relay
Switches the large current the secondary air pump draws, which is far more than a control module output could supply directly. Worth testing before the pump on any secondary air complaint: it is dramatically cheaper, fails at least as often, and a relay that never closes is indistinguishable from a pump that never runs without measuring at the pump.
Also known as: air pump relay, sai relay, smog pump relay
Referenced by 13 codes
Codes involving this component (13)
- P2444 Secondary Air Injection System Pump Stuck On Bank 1 High
- P2446 Secondary Air Injection System Pump Stuck On Bank 2 High
- P2257 Secondary Air Injection System Control A Circuit Low Moderate
- P2258 Secondary Air Injection System Control A Circuit High Moderate
- P2445 Secondary Air Injection System Pump Stuck Off Bank 1 Moderate
- P2447 Secondary Air Injection System Pump Stuck Off 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
- P0418 Secondary Air Injection System Control A Circuit Low
- P0419 Secondary Air Injection System Control B Circuit Low
- P041F Secondary Air Injection System Switching Valve A Circuit Low
- P044F Secondary Air Injection System Switching Valve A Circuit High
- P25F6 Secondary Air Injection System B
Other components in Electrical and Charging
- Data Bus 563
- Battery 218
- Gateway Module 158
- Stability Control Module 122
- Battery Temperature Sensor 115
- Infotainment Head Unit 49
- Alternator 45
- Brake Booster Pressure Sensor 39
- A/C Refrigerant Pressure Sensor 33
- Brake Light Switch 32
- Cruise Control Switch 31
- Ignition Switch 31
- Cooling Fan Relay 28
- Starter Relay 25
- A/C Compressor 25
- Clutch Switch 24
- ECM Power Relay 21
- Roof Antenna Module 19
- Immobiliser 15
- Lighting Driver Control Module 15
- Starter Motor 14
- Transmission Control Module Power Relay 14
- Fuel Pump Relay 13
- Battery Monitoring Sensor 10
- Driver Information Centre 10
- A/C Evaporator Temperature Sensor 8
- Telematics Control Module 8
- Navigation Control Module 6
- Headlamp Levelling Actuator 6
- Hydraulic Pump Relay 5
- Head-Up Display 2
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