AutoCodes – Honda – P0657 2018 Honda CR-V

P0657 2018 Honda CR-V Code - Actuator Supply Voltage Circuit open

Quick Answer

The Main Central Processing Unit (CPU)and driver ICs are built into the Powertrain Control Module (PCM). Common causes include Blown Fuse, Faulty Starter Cut Relay 1 (Built into the Relay Circuit Board), Starter Cut Relay 1 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: P0657 2018 Honda CR-V indicates Actuator Supply Voltage Circuit open.
Common causes: Common causes include Blown Fuse, Faulty Starter Cut Relay 1 (Built into the Relay Circuit Board), Starter Cut Relay 1 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.

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Code Popularity 181

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 Jan 07, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0657 2018 Honda CR-V Description

The Main Central Processing Unit (CPU)and driver ICs are built into the Powertrain Control Module (PCM). The main CPU receives drive commands, and the driver IC drives each corresponding device. Power for the main CPU is provided from the +B BACKUP FI-ECU line via CPU power supply, and power for the driver ICs is provided from FI MAIN RLY OUT line via PGM-FI main relay 1. If the FI MAIN RLY OUT voltage is a specified voltage for a specified time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0657 2018 Honda CR-V - Actuator Supply Voltage Circuit open - AutoCodes.com — P0657 2018 Honda CR-V Code - Actuator Supply Voltage Circuit open

What does this mean?

What are the Possible Causes of the DTC P0657 2018 Honda CR-V?

Blown Fuse
Faulty Starter Cut Relay 1 (Built into the Relay Circuit Board)
Starter Cut Relay 1 harness is open or shorted
Starter Cut Relay 1 circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0657 2018 Honda CR-V?

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 P0657 2018 Honda CR-V 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 P0657 2018 Honda CR-V code?

Need more information on how to fix the P0657 2018 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0657 2018 Honda CR-V 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 P0657 2018 Honda CR-V Code

1. What does the OBDII code P0657 mean on a 2018 Honda CR-V?

P0657 refers to an "Actuator Supply Voltage Circuit Open," which indicates an issue with the voltage supply to one or more actuators in the engine or transmission control system.

2. What are the common symptoms of a P0657 code in a 2018 Honda CR-V?

Symptoms may include a check engine light, reduced engine performance, erratic shifting, or failure of certain systems like the throttle or transmission to function properly.

3. What causes the P0657 code to appear on a Honda CR-V?

Common causes include a broken or damaged wiring harness, a faulty actuator, a defective powertrain control module (PCM), or corrosion on electrical connectors.

4. Can I drive my 2018 Honda CR-V with the P0657 code?

Driving with the P0657 code is not recommended as it can lead to poor performance, possible stalling, or further damage to the vehicleâ€™s systems.

5. How do I diagnose a P0657 code on a Honda CR-V?

Diagnose by inspecting the wiring and connectors for damage or corrosion, testing the actuator supply voltage circuit with a multimeter, and scanning the PCM for additional trouble codes.

6. What tools are needed to troubleshoot the P0657 code?

Youâ€™ll need a diagnostic scanner, a multimeter, and possibly a wiring diagram specific to the 2018 Honda CR-V to identify the source of the issue.

7. How much does it cost to fix a P0657 code on a 2018 Honda CR-V?

Repair costs vary depending on the issue. Fixing a broken wire may cost under $100, while replacing a PCM or actuator could cost several hundred dollars.

8. Can a bad battery cause a P0657 code on a Honda CR-V?

Yes, a weak or failing battery can cause insufficient voltage, potentially triggering the P0657 code.

9. How do I reset the P0657 code after making repairs?

Use an OBDII scanner to clear the code. If the issue is resolved, the code should not return. If it persists, further troubleshooting is needed.

10. What actuators are affected by the P0657 code on a Honda CR-V?

The specific actuators depend on the circuit affected, but they may include the throttle actuator, transmission solenoids, or other electronically controlled components.