AutoCodes – Acura – P05C1 Acura

P05C1 Acura Code - Shutter Grille Actuator Lower Temperature Malfunction

Quick Answer

The shutter grille system open/closes the shutter depending on the driving conditions. Common causes include Lower Shutter Grille Local Interconnect Network (LIN) line open, Lower Shutter Grille LIN line short to ground, Lower 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: P05C1 Acura indicates Shutter Grille Actuator Lower Temperature Malfunction.
Common causes: Common causes include Lower Shutter Grille Local Interconnect Network (LIN) line open, Lower Shutter Grille LIN line short to ground, Lower 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 248

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 P05C1 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. If the upper or lower temperature is detected as abnormal, the PCM confirms the abnormality and stores a Diagnostic Trouble Code (DTC). The DTC will be set when the internal temperature of the upper or lower actuator is the state of more than 302 °F (150 °C) was continued at least 2.5 seconds or more.

OBDII Code P05C1 Acura - Shutter Grille Actuator Lower Temperature Malfunction - AutoCodes.com — P05C1 Acura Code - Shutter Grille Actuator Lower Temperature Malfunction

What does this mean?

What are the Possible Causes of the DTC P05C1 Acura?

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

How to Fix the DTC P05C1 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 P05C1 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 P05C1 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 P05C1 Acura Code

What does the OBDII code P05C1 mean on an Acura?

The code P05C1 on an Acura indicates a "Shutter Grille Actuator Lower Temperature Malfunction," meaning the active grille shutter system is not operating properly at lower temperatures.

What are the common symptoms of the P05C1 code?

Symptoms include reduced fuel efficiency, a check engine light, potential overheating, and issues with the grille shutters not opening or closing as intended.

What causes the P05C1 code to appear?

Common causes include a faulty shutter grille actuator, wiring issues, a malfunctioning control module, or physical obstructions in the grille shutter mechanism.

Can I drive my Acura with a P05C1 code?

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

How do I diagnose the P05C1 code?

Start by visually inspecting the grille shutters for obstructions or damage, checking the wiring and connectors for faults, and using a diagnostic scanner to test the actuator performance.

What repairs are needed to fix the P05C1 code?

Repairs may involve cleaning or removing debris from the grille shutters, repairing or replacing damaged wiring, or replacing the shutter grille actuator if it’s defective.

How much does it cost to fix a P05C1 code?

Repair costs vary, but replacing the shutter grille actuator typically ranges from $150 to $400, including parts and labor.

Can the P05C1 code be caused by cold weather?

Yes, cold weather can sometimes exacerbate issues with the grille shutter actuator, especially if it’s already malfunctioning or obstructed by ice or debris.

Will clearing the P05C1 code with a scanner fix the issue?

Clearing the code may temporarily turn off the check engine light, but it won’t fix the underlying problem, and the code will likely return.

Is the P05C1 code covered under warranty?

It depends on your vehicle’s warranty. If the issue is related to a defective part and your Acura is under warranty, the repair might be covered. Check with your dealer for details.