AutoCodes – Acura – P05A0 Acura

P05A0 Acura Code - Shutter Grille Assembly Upper Malfunction

Quick Answer

The shutter grille system opens/closes the shutter depending on the driving conditions. Common causes include Faulty Upper Shutter Grille stuck, Faulty Shutter Grille Upper Actuator, Shutter Grille Upper Actuator harness is open or shorted. 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: P05A0 Acura indicates Shutter Grille Assembly Upper Malfunction.
Common causes: Common causes include Faulty Upper Shutter Grille stuck, Faulty Shutter Grille Upper Actuator, Shutter Grille Upper Actuator harness is open or shorted.
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 227

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P05A0 Acura Description

The shutter grille system opens/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 includes the actuator with CPU. 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. If the shutter grille actuator detects a restriction and if the restriction condition continues even if the initial learning is retried for a specified time, the PCM confirms the abnormality and stores a Diagnostic Trouble Code (DTC). The DTC will be set when the shutter grille actuator detects a restriction and if the restriction condition continues for at least 2.5 seconds after the initial learning is retried for three times.

OBDII Code P05A0 Acura - Shutter Grille Assembly Upper Malfunction - AutoCodes.com — P05A0 Acura Code - Shutter Grille Assembly Upper Malfunction

What does this mean?

What are the Possible Causes of the DTC P05A0 Acura?

Faulty Upper Shutter Grille stuck
Faulty Shutter Grille Upper Actuator
Shutter Grille Upper Actuator harness is open or shorted
Shutter Grille Upper Actuator circuit poor electrical connection

How to Fix the DTC P05A0 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 P05A0 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 P05A0 Acura code?

Need more information on how to fix the P05A0 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P05A0 Acura 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 P05A0 Acura Code

1. What does OBDII code P05A0 mean on an Acura?

Code P05A0 indicates a "Shutter Grille Assembly Upper Malfunction," meaning there is an issue with the active grille shutter system designed to optimize aerodynamics and engine performance.

2. What are the symptoms of code P05A0 in an Acura?

Common symptoms include an illuminated Check Engine Light, reduced fuel efficiency, and possible overheating if airflow to the radiator is restricted.

3. What causes the P05A0 code on an Acura?

Typical causes include a faulty grille shutter motor, damaged or obstructed grille shutters, electrical wiring issues, or a malfunctioning grille shutter control module.

4. How do you diagnose the P05A0 code in an Acura?

Diagnosis involves visually inspecting the grille shutters for damage or obstructions, testing the grille shutter motor and wiring for continuity, and using a scan tool to check for related system faults.

5. Can I drive my Acura with a P05A0 code?

While the vehicle may still be driveable, ignoring this code can lead to reduced fuel efficiency and potential engine overheating, especially at higher speeds.

6. How do you fix a P05A0 code on an Acura?

Repairs may include clearing debris around the grille shutters, replacing a faulty grille shutter motor, repairing damaged wiring, or reprogramming the control module if necessary.

7. How much does it cost to fix code P05A0 on an Acura?

Repair costs vary, but replacing the grille shutter motor can range from $200 to $500, including parts and labor. Diagnostic fees may add to the total cost.

8. What vehicles are commonly affected by the P05A0 code?

The P05A0 code is commonly found on modern Acura models equipped with an active grille shutter system, such as the MDX, RDX, TLX, and ILX.

9. Can a clogged grille cause the P05A0 code on an Acura?

Yes, debris or dirt clogging the grille can obstruct the shutters' movement, triggering the P05A0 code.

10. Do I need special tools to fix the P05A0 code on an Acura?

Basic tools like a multimeter and a scan tool are typically required for diagnosis and repair. Advanced repairs may require specific Acura diagnostic equipment.