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2024 MINI COOPER SE
Electric•FWD•AUTOMATIC•ev
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor314Torque4618Fluid5DTC1878Battery1Maintenance0Recalls2
P0415low severityPowertrain

Secondary Air Injection System Switching Valve B Circuit Open

on 2024 Mini Cooper SE Electric · FWD

What this code means

The PCM detected an open circuit in the secondary air injection switching valve B. This valve routes fresh air into the exhaust to lower cold-start emissions.

Symptoms

  • Check engine light on
  • Failed emissions test
  • Increased cold-start emissions

Common causes

  • Faulty switching valve B
  • Open wiring or connector
  • Blown fuse or relay
  • Faulty PCM driver circuit

Diagnostic steps

  1. Scan and confirm P0415
  2. Inspect valve B wiring
  3. Check valve resistance and voltage
  4. Test PCM control signal
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