P0505 Honda Code - Idle Air Control Valve
Quick Answer
This system automatically controls engine idle speed to a specified level. Common causes include Faulty Idle Air Control Valve (IACV) valve, IAC valve harness is open or shorted, IAC valve 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 Honda indicates Idle Air Control Valve.
- Common causes
- Common causes include Faulty Idle Air Control Valve (IACV) valve, IAC valve harness is open or shorted, IAC valve 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.
Code P0505 Honda Description
One step of IACV-AAC valve movement causes the respective opening of the air by-pass passage. (i.e. when the step advances, the opening is enlarged.) The opening of the valve is varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects the actual engine speed and sends a signal to the ECM. The ECM then controls the step position of the IACV-AAC valve so that engine speed coincides with the target value memorized in ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warm-up, deceleration, and engine load (air conditioner, power steering, and cooling fan operation).
What are the Possible Causes of the DTC P0505 Honda?
- Faulty Idle Air Control Valve (IACV) valve
- IAC valve harness is open or shorted
- IAC valve circuit poor electrical connection
How to Fix the DTC P0505 Honda?
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.
Code Tech Notes
2001 Honda Odyssey
2003 Honda Odyssey
2003 Honda Pilot
Honda Factory Service Bulletin OBDII Code P0505
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0505 Honda 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 Honda code?
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Need Help with the Code?
Get the P0505 Honda code diagnosed by a professional: Find a repair shop in your area
Information for Specific Honda Models
- P0505 1996 Honda Civic — Idle Air Control Valve
- P0505 1997 Honda Civic — Idle Air Control Valve
- P0505 1998 Honda Civic — Idle Air Control Valve
- P0505 1999 Honda Civic — Idle Air Control Valve
- P0505 2000 Honda Civic — Idle Air Control Valve
Frequently Asked Questions about P0505 Honda Code
1. What are the common symptoms of OBDII code P0505 in a Honda related to the Idle Air Control Valve?
Symptoms include erratic or high idling, stalling when coming to a stop, and potential difficulty starting the vehicle.
2. What are some common causes for OBDII code P0505 in a Honda related to the Idle Air Control Valve?
Common causes include a faulty or dirty idle air control valve, carbon buildup in the throttle body, vacuum leaks, or issues with the wiring or connections.
3. How can I diagnose OBDII code P0505 in a Honda related to the Idle Air Control Valve?
Diagnosis typically involves checking the idle air control valve for proper operation, inspecting the throttle body for carbon buildup, and conducting tests for vacuum leaks and electrical issues.
4. Can I drive my Honda with OBDII code P0505 related to the Idle Air Control Valve?
It is not recommended to drive your Honda with this code, as it can lead to poor engine performance, stalling, and potentially unsafe driving conditions.
5. How can I repair OBDII code P0505 related to the Idle Air Control Valve in my Honda?
Repair options may include cleaning or replacing the idle air control valve, cleaning the throttle body, fixing any vacuum leaks, or repairing any wiring or connection issues.
6. Will resetting the OBDII code P0505 related to the Idle Air Control Valve make it go away permanently?
Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.
7. Can a DIY enthusiast fix OBDII code P0505 related to the Idle Air Control Valve in a Honda?
Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this issue by following repair guides or consulting with automotive forums.
8. How much does it typically cost to repair OBDII code P0505 related to the Idle Air Control Valve in a Honda?
Costs can vary based on the specific issue and whether you choose to repair it yourself or take it to a mechanic. Expect costs for parts and labor to range from $100 to $500.
9. Are there any preventative measures to avoid OBDII code P0505 related to the Idle Air Control Valve in a Honda?
Regular maintenance, such as cleaning the throttle body and inspecting the idle air control valve, can help prevent issues that lead to this OBDII code.
10. How long can I safely drive my Honda with OBDII code P0505 related to the Idle Air Control Valve before getting it repaired?
It is recommended to address the issue as soon as possible to prevent further damage to the engine and ensure safe driving conditions.
Discuss the causes and fixes for P0505 Honda OBDII Code
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i have a 2001 Honda Accord V6 the engine idles up and down and the car wont advance or accelerate properly, if i step on it it wants to die. can you help!
thanks.
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New iacv but when I push on throttle a certain position it hesitates but anything past it ill let off throttle n push it down before the hesitation place and iywont hesitate new tips new plugs wires cap rotor ignition coil d16y8
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