AutoCodes – Acura – P0657 Acura

P0657 Acura 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 Acura 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 8,148
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 07, 2024
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Code P0657 Acura 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 Acura - Actuator Supply Voltage Circuit open - AutoCodes.com
P0657 Acura Code - Actuator Supply Voltage Circuit open

What are the Possible Causes of the DTC P0657 Acura?

  • 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 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 P0657 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 P0657 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 P0657 Acura Code

1. What are the common symptoms of OBDII code P0657 in an Acura related to the Actuator Supply Voltage Circuit open?

- Common symptoms include rough idling, poor engine performance, and potentially stalling of the vehicle.

2. What are the typical causes of the Actuator Supply Voltage Circuit open code (P0657) in an Acura?

- The most common causes are a faulty actuator, damaged wiring or connectors in the circuit, or a failed powertrain control module (PCM).

3. How can I diagnose the Actuator Supply Voltage Circuit open issue in my Acura triggering code P0657?

- Use a multimeter to test the voltage at the actuator, inspect the wiring and connectors for damage, and perform a thorough visual inspection of the circuit.

4. Is it safe to drive my Acura with the P0657 code related to the Actuator Supply Voltage Circuit open?

- It is not recommended to drive your Acura with this code present, as it can lead to further damage to the vehicle and potential safety hazards.

5. Can I repair the Actuator Supply Voltage Circuit open issue triggering code P0657 in my Acura myself?

- While some DIY enthusiasts may be able to address this issue, it is recommended to seek professional help to accurately diagnose and repair the problem.

6. How much does it typically cost to fix the Actuator Supply Voltage Circuit open issue causing code P0657 in an Acura?

- The cost can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more for parts and labor.

7. Will resetting the OBDII system clear the P0657 code related to the Actuator Supply Voltage Circuit open in my Acura?

- Resetting the system may temporarily clear the code, but it will likely reappear if the underlying issue is not addressed.

8. Can a low vehicle battery voltage trigger the P0657 code in an Acura?

- Yes, low battery voltage can sometimes cause electrical issues that trigger the P0657 code related to the Actuator Supply Voltage Circuit open.

9. Are there any specific Acura models known to have a higher incidence of the P0657 code due to the Actuator Supply Voltage Circuit open issue?

- While this code can occur in various Acura models, some older models or those with high mileage may be more prone to experiencing this problem.

10. How urgent is it to address the Actuator Supply Voltage Circuit open issue causing code P0657 in my Acura?

- It is important to address this issue promptly to prevent further damage to the vehicle and ensure optimal performance and safety.

Discuss the causes and fixes for P0657 Acura OBDII Code

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