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2026 MAZDA CX-70
3.3L Turbo I6 Hybrid•AWD•AUTOMATIC•hybrid•turbo
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Repairs0Labor478Torque140Fluid7DTC1874Battery1Maintenance0Recalls0
P1496moderate severityPowertrain

Idle Air Control Valve Circuit

on 2026 Mazda CX-70 3.3L Turbo I6 Hybrid · AWD

What this code means

The PCM detects a fault in the idle air control valve circuit. This affects the engine's ability to regulate idle speed.

Symptoms

  • Rough or unstable idle
  • Stalling
  • Check engine light on

Common causes

  • Carbon buildup in IAC valve
  • Faulty IAC valve
  • Damaged wiring or connector
  • Faulty PCM

Diagnostic steps

  1. Scan for stored codes
  2. Inspect IAC valve and wiring
  3. Test IAC valve operation
  4. Clean or replace IAC valve
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