AutoCodes.com
Login with Google
AutoCodes – Honda – P05A3 Honda

P05A3 Honda Code - Shutter Grille Actuator Upper Malfunction

Quick Answer

The shutter grille system open/closes the shutter depending on the driving conditions. Common causes include Upper Shutter Grille Local Interconnect Network (LIN) line open, Upper Shutter Grille LIN line short to ground, Upper Shutter Grille LIN line short to power. 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
P05A3 Honda indicates Shutter Grille Actuator Upper Malfunction.
Common causes
Common causes include Upper Shutter Grille Local Interconnect Network (LIN) line open, Upper Shutter Grille LIN line short to ground, Upper Shutter Grille LIN line short to power.
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.
Save to My Repairs My Repairs
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 505
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Dec 27, 2023
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P05A3 Honda Description

The shutter grille system open/closes the shutter depending on the driving conditions. The system improves fuel efficiency by reducing the wind drag. The shutter is controlled by the shutter grille which integrates the actuator. The Powertrain Control Module (PCM) sends open/close requests which depends on the driving conditions to the shutter grille via the Local Interconnect Network (LIN) line. Also the PCM receives failure information from the shutter grille via the LIN line. The PCM discriminates a failure by the signal value received via the LIN line. If the PCM receives a specified signal from the shutter grille, the PCM detects as a shutter grille LIN line open/short failure and stores a Diagnostic Trouble Code (DTC). The DTC will be set when the upper or lower actuator state of short to ground or EEPROM of the read / write errors of the motor has continued for at least 2.5 seconds or more.
OBDII Code P05A3 Honda - Shutter Grille Actuator Upper Malfunction - AutoCodes.com
P05A3 Honda Code - Shutter Grille Actuator Upper Malfunction
What does this mean?

What are the Possible Causes of the DTC P05A3 Honda?

  • Upper Shutter Grille Local Interconnect Network (LIN) line open
  • Upper Shutter Grille LIN line short to ground
  • Upper Shutter Grille LIN line short to power

How to Fix the DTC P05A3 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P05A3 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 P05A3 Honda code?

Need more information on how to fix the P05A3 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P05A3 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

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 P05A3 Honda Code

What does the OBDII code P05A3 mean on a Honda?

P05A3 indicates a malfunction in the upper shutter grille actuator, a component that helps regulate airflow through the grille to improve aerodynamics and engine efficiency.

What are the common symptoms of a P05A3 code?

Symptoms can include an illuminated check engine light, reduced fuel efficiency, increased engine temperature, or unusual noises near the front grille.

What causes the P05A3 code to appear?

Common causes include a faulty shutter grille actuator, wiring issues such as damaged or corroded connectors, or a malfunction in the actuator's control module.

Can I drive my Honda with a P05A3 code?

While the vehicle may still be drivable, ignoring the issue can lead to reduced fuel efficiency, potential overheating, or further damage to the grille system.

How is the P05A3 code diagnosed?

A technician will use a scan tool to confirm the code, visually inspect the grille actuator and wiring, and possibly test the actuator's functionality using specialized equipment.

How can I fix the P05A3 code on my Honda?

Repairs may involve replacing the upper shutter grille actuator, repairing damaged wiring or connectors, or reprogramming the control module if necessary.

How much does it cost to repair a P05A3 code?

Repair costs can vary but typically range from $200 to $600, depending on whether the actuator needs replacement and labor costs in your area.

Can a P05A3 code be caused by extreme weather?

Yes, extreme cold, ice, or debris can obstruct the grille shutters or cause the actuator to malfunction.

How can I prevent the P05A3 code from recurring?

Regularly inspect the grille area for debris, ensure the actuator is clean and free-moving, and address any wiring issues promptly.

Is the P05A3 code specific to Honda vehicles?

No, while it is commonly seen in Honda vehicles, the P05A3 code can also appear in other makes and models with similar grille shutter systems.

Discuss the causes and fixes for P05A3 Honda OBDII Code

Submit a New Comment

Code P05A3 Honda comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play