Acura P1519: Idle Air Control Valve Circuit Malfunction

Is your scanner showing Acura P1519?
No worries. We'll show you what it means and how to deal with it.

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OBD Codex, Administrator

Acura P1519: Idle Air Control Valve Circuit Malfunction

DIY Difficulty Level
Repair Cost
Can I Still Drive?
Yes (Short-term only)

What Does The Acura P1519 Code Mean?

This code indicates the condition that key on or engine running; and the PCM detected an unexpected voltage condition on the Idle Air Control (IAC) valve control circuit.

What Are The Potential Causes Of The Acura P1519 Code?

Below are some potential causes of this DTC:

  • IAC valve circuit is open, shorted to ground or to system power
  • IAC valve power circuit is open or shorted to ground
  • IAC valve is damaged or has failed
  • PCM is damaged

How Can You Fix The Acura P1519 Code?

TSB 03-006 (3/17/03) contains a repair procedure for this code

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Acura Engine Control Module
>>> Honda Idle Air Control Valve with Gasket

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

2001 Engine Performance Acura Self-Diagnostics, MDX, 3.2CL & 3.2TL, page 54.

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