KlaroP0416
MODERATESecondary Air Injection System Switching Valve B Circuit Open
What this code means
Secondary Air Injection System Switching Valve B Circuit Open. Catalytic converter, exhaust gas recirculation, particulate filter, fuel vapour. These faults rarely leave you stranded, but they fail the roadworthiness test and become expensive if left alone.
How to read this code
- PPowertrain
- 0standardised code
- 4Emission controls
- 16P0416
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 4, locates the fault: emission controls.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.
Nearby codes
- P0410Secondary Air Injection System Malfunction
- P0411Secondary Air Injection System Incorrect Flow Detected
- P0412Secondary Air Injection System Switching Valve A Circuit Malfunction
- P0413Secondary Air Injection System Switching Valve A Circuit Open
- P0414Secondary Air Injection System Switching Valve A Circuit Shorted
- P0415Secondary Air Injection System Switching Valve B Circuit Malfunction
- P0417Secondary Air Injection System Switching Valve B Circuit Shorted
- P0418Secondary Air Injection System Relay A circuit Malfunction