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P1657 Ford Code - CAN Link Chip Malfunction

Quick Answer

The P1657 Ford diagnostic trouble code (DTC) refers to a CAN Link Chip Malfunction. Common causes include Faulty CAN link chip, Wiring or connection issues in the CAN network, ECU software glitch. 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
P1657 Ford indicates CAN Link Chip Malfunction.
Common causes
Common causes include Faulty CAN link chip, Wiring or connection issues in the CAN network, ECU software glitch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1657 Ford Description

The P1657 Ford diagnostic trouble code (DTC) refers to a CAN Link Chip Malfunction. The Controller Area Network (CAN) is a communication protocol used in modern vehicles to allow various electronic control units (ECUs) to communicate with each other. The CAN link chip is a crucial component that facilitates this communication. When this chip malfunctions, it can disrupt the communication between ECUs, leading to potential issues with the vehicle's performance and functionality.

OBDII Code P1657 Ford - CAN Link Chip Malfunction
P1657 Ford Code - CAN Link Chip Malfunction

Common Causes of P1657 Ford

  1. Faulty CAN link chip
  2. Wiring or connection issues in the CAN network
  3. ECU software glitch
  4. Electrical interference from aftermarket components
  5. Water or corrosion damage to the CAN link chip

Symptoms of P1657 Ford

  1. Engine misfires
  2. ABS warning light illuminated
  3. Transmission shifting irregularities
  4. Loss of power
  5. Vehicle stalling

How to Fix P1657 Ford

  1. Diagnose the issue using a professional diagnostic tool to pinpoint the exact cause of the malfunction.
  2. Inspect the CAN link chip, wiring, and connections for any damage or corrosion.
  3. Repair or replace the faulty CAN link chip, if necessary.
  4. Clear the DTC from the vehicle's ECU memory and perform a road test to ensure the issue has been resolved.
  5. If the problem persists, further troubleshooting may be required to identify any underlying issues with the CAN network.

Cost to Fix P1657 Ford

The typical repair costs for addressing a P1657 Ford code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty CAN link chip and addressing related wiring or connection issues can range from $200 to $500, including parts and labor. However, it is essential to note that the actual repair costs may differ based on factors such as the vehicle's make and model, the location of the repair shop, and the technician's labor rates. It is recommended to consult with a professional mechanic for a more accurate cost estimate based on your individual circumstances.

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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 P1657 Ford Code

1. What are the common symptoms of OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- Common symptoms include issues with the vehicle's transmission, such as harsh shifting, delayed shifting, or the transmission going into limp mode.

2. What can cause the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- The code can be triggered by a malfunction in the CAN link chip itself, wiring issues, a faulty transmission control module (TCM), or a problem with the powertrain control module (PCM).

3. How serious is the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- This code is considered serious as it can affect the proper functioning of the vehicle's transmission, leading to potential safety hazards and drivability issues.

4. How can I diagnose the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- Proper diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, followed by inspecting the CAN link chip, wiring connections, TCM, and PCM for any signs of damage or malfunction.

5. Can I continue driving with the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission and potentially leave you stranded on the road.

6. What are the potential repair options for fixing the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- Repair options may include replacing the CAN link chip, repairing or replacing damaged wiring, replacing the TCM or PCM if faulty, and ensuring all connections are secure and functioning properly.

7. How much does it typically cost to repair the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- The cost of repairs can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for simple fixes to over a thousand dollars for more complex repairs involving module replacements.

8. Can I reset the OBDII code P1657 (Ford) CAN Link Chip Malfunction by disconnecting the battery?

- While disconnecting the battery can sometimes clear trouble codes temporarily, it is not a recommended method for resolving this particular issue. Proper diagnosis and repairs are necessary to fix the underlying problem.

9. Are there any preventive maintenance steps to avoid the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- Regularly inspecting and maintaining the vehicle's electrical system, including checking for loose connections and ensuring proper grounding, can help prevent issues that may trigger this code.

10. How long does it typically take to repair the OBDII code P1657 (Ford) CAN Link Chip Malfunction?

- The repair time can vary depending on the specific cause of the issue and the expertise of the technician, but it may take anywhere from a few hours to a full day to diagnose and fix the problem.

Discuss the causes and fixes for P1657 Ford OBDII Code

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  • Engine , airbag, ABS, Handbrake and spanner lights are on. Milage is ------- then it comes ODO data error. The gear shaft does not move from park to any other gears. Ford Fusion 2006 SE 3.0 L
    How can I fix this problem? Some says if I change TSS transmission speed sensor.

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