AutoCodes – Jeep – P0505 Jeep

P0505 Jeep Code - Idle Control System Malfunction

Quick Answer

The throttle body has an air control passage that provides air for the engine at idle (the throttle plate is closed). Common causes include Faulty Idle Control System motor, Idle Control System motor harness is open or shorted, Idle Control System motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0505 Jeep indicates Idle Control System Malfunction.
Common causes
Common causes include Faulty Idle Control System motor, Idle Control System motor harness is open or shorted, Idle Control System motor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 22,794
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0505 Jeep Description

The throttle body has an air control passage that provides air for the engine at idle (the throttle plate is closed). The IAC motor pintle protrudes into the air control passage Throttle Body Air Control Passage and regulates air flow through it. Based on various sensor inputs, the Powertrain Control Module (PCM) adjusts engine idle speed by moving the IAC motor pintle in and out of the air control passage. The IAC motor is positioned when the ignition key is turned to the On position.
OBDII Code P0505 Jeep - Idle Control System Malfunction - AutoCodes.com
P0505 Jeep Code - Idle Control System Malfunction

What are the Possible Causes of the DTC P0505 Jeep?

  • Faulty Idle Control System motor
  • Idle Control System motor harness is open or shorted
  • Idle Control System motor circuit poor electrical connection
  • Faulty Powertrain or Engine Control Module
  • Vaccum leaks or damaged hoses or improper routing

How to Fix the DTC P0505 Jeep?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0505 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0505 Jeep code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0505 Jeep Code

No Frequently Asked Questions about P0505 Jeep Code found.

Discuss the causes and fixes for P0505 Jeep OBDII Code

  • Hello. I have a Jeep Laredo Grand Cherokee 2004, 4.0 Engine. The Engine light is on, did the 3X's turn on and off instrument panel, got P0505 code. I have noticed before this came up, at start up, engine would start hard but did and ran rough for a few seconds, other times high idle. Suggestions on what I should do? Not sure where the location of the IACV-AAC VALVE is located, but would be willing to replace this if this is suggested? Again you thought?

  • The Idle Control Valve it's probably the most common problem for the P0505 code. The valve (motor) is attached to the throttle body. The price is around $130.

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