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P1509 Chevrolet Code - Idle Speed High Idle Air Control System Not Responding

- Code Popularity: 21,352 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1509 Chevrolet?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Idle Air Control (IAC)
  • Idle Air Control Valve harness is open or shorted
  • Idle Air Control Valve circuit poor electrical connection
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How to Fix the DTC P1509 Chevrolet?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1509 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine rough idle

Code P1509 Chevrolet Description

With the engine runtime 2 minutes, closed throttle, Engine Coolant Temperature (ECT) input over 122°F, Intake Air Temperature (IAT) over 62°F, VSS under 3 mph, the Powertrain Control Module (PCM) detects that the Actual idle speed was 175 rpm higher than desired idle speed.

OBDII Code P1509 Chevrolet - Idle Speed High Idle Air Control System Not Responding - AutoCodes.com
P1509 Chevrolet Code - Idle Speed High Idle Air Control System Not Responding

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Code P1509 Chevrolet comments

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