AutoCodes – Honda – P05B7 Honda

P05B7 Honda Code - Shutter Grille Actuator Lower 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: P05B7 Honda indicates Shutter Grille Actuator Lower 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 274

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 P05B7 Honda 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 actuator voltage is detected as abnormal, the PCM confirms the abnormality and stores a Diagnostic Trouble Code (DTC). The DTC will be set when the power supply voltage of the PCM is more than 10.5V, when the actuator is 17.5 V or more, or less than 7.5 V for at least 2.5 seconds.

OBDII Code P05B7 Honda - Shutter Grille Actuator Lower Malfunction - AutoCodes.com — P05B7 Honda Code - Shutter Grille Actuator Lower Malfunction

What does this mean?

What are the Possible Causes of the DTC P05B7 Honda?

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 P05B7 Honda?

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 P05B7 Honda 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 P05B7 Honda code?

Need more information on how to fix the P05B7 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P05B7 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

P05B7 2016 Honda CR-V — Shutter Grille Actuator Lower Malfunction
P05B7 2017 Honda CR-V — Shutter Grille Actuator Lower Malfunction
P05B7 2018 Honda CR-V — Shutter Grille Actuator Lower Malfunction
P05B7 2019 Honda CR-V — Shutter Grille Actuator Lower Malfunction
P05B7 2020 Honda CR-V — Shutter Grille Actuator Lower Malfunction
P05B7 2021 Honda CR-V — Shutter Grille Actuator Lower 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 P05B7 Honda Code

What does the OBDII code P05B7 mean on a Honda?

The code P05B7 indicates a malfunction in the lower shutter grille actuator, which is responsible for controlling airflow through the grille to optimize aerodynamics and engine temperature.

What are the common symptoms of a P05B7 code on a Honda?

Common symptoms include an illuminated check engine light, reduced fuel efficiency, overheating issues, or noticeable grille shutters that are stuck open or closed.

What causes the P05B7 code to appear on a Honda?

The causes may include a faulty shutter grille actuator, wiring issues, a blown fuse, debris obstructing the grille shutters, or a malfunctioning control module.

Can I drive my Honda with the P05B7 code active?

While the car may still be drivable, ignoring the P05B7 code can lead to reduced fuel economy, potential overheating, or further damage to the grille actuator system.

How do I diagnose the P05B7 code on my Honda?

Start by visually inspecting the grille shutters for debris or damage, checking the actuator's wiring and connections, and using a scan tool to confirm the code and test the actuator's operation.

What tools are needed to repair the P05B7 code on a Honda?

You may need a diagnostic scan tool, a multimeter for electrical testing, basic hand tools for accessing the grille area, and possibly replacement parts like a new actuator.

How much does it cost to fix the P05B7 code on a Honda?

Repair costs vary but typically range from $150 to $500, depending on whether the issue is a simple wiring fix or requires replacing the shutter grille actuator.

What can cause the grille actuator to fail on a Honda?

Common causes of actuator failure include wear and tear, water intrusion, electrical short circuits, or physical damage from road debris.

How do I reset the P05B7 code after making repairs?

After fixing the issue, use an OBDII scan tool to clear the code. If the problem is resolved, the code should not return.

Is the P05B7 code covered under warranty for a Honda?

It depends on your vehicleâ€™s warranty terms and coverage. If the car is still under warranty, especially a powertrain or emissions warranty, this repair might be covered. Check with your dealer for details.