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OBD-II Code Toyota

P1652 — Toyota — Idle Air Control Valve Control Circuit Malfunction

The ECU detects a fault in the idle air control (IAC) valve control circuit.

Brand Toyota
System Security System
Severity Medium
Safe to drive? Yes, with caution
Advanced scanner Not necessarily

What does code P1652 mean on Toyota vehicles?

The ECU detects a fault in the idle air control (IAC) valve control circuit.

Common symptoms

  • Unstable idle
  • stalling
  • high or low idle speed

Possible causes

  • Faulty IAC valve
  • wiring issues
  • carbon buildup

Initial recommendation

Clean and test IAC valve operation and inspect wiring and connectors.

Safety notice

This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine Toyota code P1652 with your vehicle's actual symptoms for more complete diagnostic guidance.

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