AutoCodes – Generic – C164A

C164A Code - EPS Communication Malfunction

Quick Answer

The power steering system receives advanced parking guidance system information from the Parking Assist ECU via CAN communication. Common causes include Faulty Parking Assist ECU, Faulty Power Steering ECU. 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: C164A indicates EPS Communication Malfunction.
Common causes: Common causes include Faulty Parking Assist ECU, Faulty Power Steering ECU.
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 2,413

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 Nov 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C164A Description

The power steering system receives advanced parking guidance system information from the Parking Assist ECU via CAN communication. This Diagnostic Trouble Code (DTC) is stored if the Parking Assist ECU receives abnormal signals from the power steering ECU.

OBDII Code C164A - EPS Communication Malfunction - AutoCodes.com — C164A Code - EPS Communication Malfunction

What does this mean?

What are the Possible Causes of the DTC C164A?

Faulty Parking Assist ECU
Faulty Power Steering ECU

How to Fix the DTC C164A?

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 C164A 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 C164A code?

Need more information on how to fix the C164A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C164A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C164A Lexus — EPS Communication Malfunction
C164A Toyota — EPS Communication 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 C164A Code

1. What are the common symptoms of OBDII code C164A (EPS Communication Malfunction)?

The common symptoms of OBDII code C164A include difficulty steering, EPS (Electric Power Steering) warning light illuminated on the dashboard, and erratic steering behavior.

2. What are the possible causes of OBDII code C164A?

Possible causes of OBDII code C164A include a faulty EPS control module, damaged wiring or connectors in the EPS system, or an internal fault within the EPS motor.

3. How can I diagnose the EPS Communication Malfunction indicated by code C164A?

Diagnosing the EPS Communication Malfunction involves using a diagnostic scanner to retrieve the stored trouble codes, checking the wiring and connectors for any damage, and testing the EPS control module for proper functionality.

4. Can a low battery voltage trigger the EPS Communication Malfunction code C164A?

Yes, a low battery voltage can potentially trigger the EPS Communication Malfunction code C164A due to insufficient power supply to the EPS system, leading to communication errors.

5. What are some repair tips for resolving OBDII code C164A?

Repair tips for resolving OBDII code C164A include checking and repairing any damaged wiring or connectors, performing a reset of the EPS system, and replacing the EPS control module if necessary.

6. Is it safe to continue driving with the EPS Communication Malfunction code C164A present?

It is not recommended to continue driving with the EPS Communication Malfunction code C164A present, as it can affect the steering performance and compromise vehicle safety. It is best to address the issue promptly.

7. How much does it typically cost to repair OBDII code C164A?

The cost to repair OBDII code C164A can vary depending on the specific cause of the issue. Repairs may range from a simple wiring repair to a more involved EPS control module replacement, so costs can vary accordingly.

8. Can a DIY enthusiast attempt to fix OBDII code C164A at home?

While some basic troubleshooting steps can be performed at home, fixing OBDII code C164A often requires specialized tools and expertise. It is recommended to consult a professional mechanic for a proper diagnosis and repair.

9. Will resetting the trouble codes make OBDII code C164A disappear permanently?

Resetting the trouble codes may temporarily clear OBDII code C164A, but if the underlying issue causing the EPS Communication Malfunction is not addressed, the code is likely to reappear after some time.

10. How long does it take to repair the EPS Communication Malfunction indicated by code C164A?

The repair time for EPS Communication Malfunction indicated by code C164A can vary depending on the exact cause and complexity of the repair needed. It could take anywhere from a few hours to a full day, depending on the extent of the issue.