AutoCodes – Acura – P05A3 Acura

P05A3 Acura 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 Acura 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 242

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 27, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P05A3 Acura 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 Acura - Shutter Grille Actuator Upper Malfunction - AutoCodes.com — P05A3 Acura Code - Shutter Grille Actuator Upper Malfunction

What does this mean?

What are the Possible Causes of the DTC P05A3 Acura?

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 Acura?

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 Acura 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 Acura 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 P05A3 Acura Code

1. What are the common symptoms of an OBDII code P05A3 related to the Shutter Grille Actuator Upper Malfunction in an Acura?

- Common symptoms include poor engine performance, reduced fuel efficiency, and an illuminated check engine light.

2. What can cause the Shutter Grille Actuator Upper Malfunction in an Acura resulting in the OBDII code P05A3?

- The malfunction is often caused by a faulty shutter grille actuator, damaged wiring, or a problem with the grille assembly itself.

3. How serious is the OBDII code P05A3 related to the Shutter Grille Actuator Upper Malfunction in an Acura?

- While the vehicle may still be operable, it is important to address this issue promptly to prevent further damage and maintain optimal performance.

4. Is it safe to continue driving with an OBDII code P05A3 in an Acura?

- It is generally not recommended to drive with this code present, as it can lead to decreased fuel efficiency and potential engine issues.

5. How can the Shutter Grille Actuator Upper Malfunction in an Acura be repaired?

- Repair typically involves diagnosing the specific cause of the malfunction, which may require replacing the actuator, repairing wiring, or addressing issues with the grille assembly.

6. Can resetting the OBDII system clear the P05A3 code related to the Shutter Grille Actuator Upper Malfunction in an Acura?

- While resetting the system may temporarily remove the code, it will reappear if the underlying issue is not addressed.

7. Are there any DIY tips for troubleshooting the OBDII code P05A3 in an Acura?

- DIY troubleshooting tips include checking the wiring connections, inspecting the actuator for any visible damage, and ensuring the grille assembly is functioning properly.

8. How can a professional mechanic diagnose the Shutter Grille Actuator Upper Malfunction causing the OBDII code P05A3 in an Acura?

- A mechanic may use a diagnostic scanner to retrieve the specific code, inspect the actuator and wiring, and conduct further tests to pinpoint the cause of the malfunction.

9. Are there any recalls or technical service bulletins related to the OBDII code P05A3 in Acura vehicles?

- It is advisable to check with your local Acura dealership or online resources for any relevant recalls or technical service bulletins related to this issue.

10. What is the typical cost to repair the Shutter Grille Actuator Upper Malfunction causing the OBDII code P05A3 in an Acura?

- The cost of repair can vary depending on the specific issue, but it may involve parts replacement, labor costs, and diagnostic fees, so it is recommended to obtain estimates from reputable repair shops.