AutoCodesHonda – P05A3 2018 Honda CR-V

P05A3 2018 Honda CR-V 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 2018 Honda CR-V 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.
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Code Popularity 455
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 27, 2023
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Code P05A3 2018 Honda CR-V 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 2018 Honda CR-V - Shutter Grille Actuator Upper Malfunction - AutoCodes.com
P05A3 2018 Honda CR-V Code - Shutter Grille Actuator Upper Malfunction

What are the Possible Causes of the DTC P05A3 2018 Honda CR-V?

  • 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 2018 Honda CR-V?

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 2018 Honda CR-V 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 2018 Honda CR-V code?

Need more information on how to fix the P05A3 2018 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P05A3 2018 Honda CR-V code diagnosed by a professional: Find a repair shop in your area

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 2018 Honda CR-V Code

1. What does the OBDII code P05A3 mean on a 2018 Honda CR-V?

The code P05A3 indicates a malfunction in the shutter grille actuator upper, which is part of the active grille shutter system designed to improve aerodynamics and engine efficiency.

2. What are the symptoms of a P05A3 code on a 2018 Honda CR-V?

Common symptoms include the check engine light turning on, reduced fuel efficiency, potential overheating, and possible aerodynamic performance issues.

3. What causes the P05A3 code to appear on a 2018 Honda CR-V?

This code can be triggered by a faulty shutter grille actuator, damaged wiring or connectors, debris obstructing the grille shutters, or a failed control module.

4. How can I diagnose a P05A3 code on my 2018 Honda CR-V?

Start by visually inspecting the grille shutters for debris or damage, check the actuator wiring and connections for wear or corrosion, and use an OBDII scanner to confirm the code and test the actuator functionality.

5. Can I drive my 2018 Honda CR-V with a P05A3 code?

While the vehicle may be drivable, ignoring the issue can lead to reduced fuel efficiency or potential engine cooling problems, so it’s best to address the code promptly.

6. How do I fix the P05A3 code on a 2018 Honda CR-V?

Possible fixes include cleaning or removing debris from the grille shutters, repairing or replacing damaged wires, or replacing the faulty shutter grille actuator.

7. How much does it cost to repair a P05A3 code on a 2018 Honda CR-V?

Repair costs vary but typically range from $100 to $300 for part replacement, with labor costs depending on the complexity of the repair.

8. Can a software update fix the P05A3 code on a 2018 Honda CR-V?

In rare cases, a software update to the vehicle’s control module may resolve the issue, but physical component inspection is usually necessary first.

9. What tools do I need to troubleshoot the P05A3 code on a 2018 Honda CR-V?

You’ll need an OBDII scanner, a multimeter to test electrical connections, and basic tools for inspecting and potentially replacing the actuator or wiring.

10. What should I do if the P05A3 code returns after repairs on my 2018 Honda CR-V?

If the code reappears, recheck for debris, wiring issues, or actuator defects, and ensure all connections are secure. If necessary, consult a professional technician for further diagnosis.

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