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2003 TOYOTA TACOMA
2.7L I4•RWD•AUTOMATIC•gas•3RZ-FE
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1066Torque2197Fluid17DTC3480Battery2Maintenance0Recalls5
P2609low severityPowertrain

Intake Air Heater System Performance

on 2003 Toyota Tacoma 2.7L I4 · RWD

What this code means

The intake air heater circuit is not performing as expected. This heater warms incoming air to help cold starts, mainly on diesels.

Symptoms

  • Hard cold starts
  • Warning light on
  • Rough running when cold

Common causes

  • Faulty intake air heater
  • Wiring or relay fault
  • Blown fuse
  • Failed control module

Diagnostic steps

  1. Verify code with scan tool
  2. Check heater power and ground
  3. Test heater element resistance
  4. Inspect relay and fuse
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Other Powertrain codes on this vehicle

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