AutoCodes – Generic – P05C1

P05C1 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 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 237

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

What does this mean?

What are the Possible Causes of the DTC P05C1?

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?

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 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 code?

Need more information on how to fix the P05C1 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P05C1 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P05C1 Acura — Shutter Grille Actuator Lower Temperature Malfunction
P05C1 Honda — Shutter Grille Actuator Lower Temperature Malfunction

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 Code

What does the OBDII code P05C1 mean?

The P05C1 code indicates a malfunction in the shutter grille actuator at lower temperatures, which controls airflow through the grille to optimize engine performance and temperature.

What are the common symptoms of the P05C1 code?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, engine overheating in extreme conditions, or a grille shutter stuck open or closed.

What causes the P05C1 code to appear?

Common causes include a faulty shutter grille actuator, damaged wiring or connectors, mechanical obstruction in the grille shutters, or issues with the engine control module (ECM).

Can I drive with the P05C1 code active?

While the vehicle may still be drivable, ignoring this code could lead to reduced fuel efficiency and potential overheating issues, especially in extreme weather conditions.

How is the P05C1 code diagnosed?

Technicians diagnose this code by visually inspecting the grille actuator and wiring, testing the actuator's functionality, and using a scan tool to check for related codes and monitor live data.

What repairs are needed to fix the P05C1 code?

Repairs may include replacing the shutter grille actuator, repairing or replacing damaged wiring or connectors, clearing mechanical obstructions, or reprogramming the ECM if necessary.

How much does it cost to fix the P05C1 code?

Repair costs can vary, but replacing a shutter grille actuator typically ranges from $200 to $500, including parts and labor.

Can a faulty battery cause the P05C1 code?

Yes, a weak battery or voltage issues can sometimes cause communication errors with the actuator, triggering this code.

Will clearing the code fix the problem?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be fixed to prevent the code from returning.

How can I prevent the P05C1 code from occurring?

Regular maintenance, including inspecting the grille shutters for debris or damage and ensuring the actuator wiring is intact, can help prevent this code from appearing.