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U0163 2015 Toyota RAV4 Code - Lost Communication with Navigation Control Module

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Navigation Control Module, Navigation Control Module 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: U0163 2015 Toyota RAV4 indicates Lost Communication with Navigation Control Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Navigation Control Module, Navigation Control Module 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 198

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 Mar 27, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0163 2015 Toyota RAV4 Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Navigation Control Module has not been received.

OBDII Code U0163 2015 Toyota RAV4 - Lost Communication with Navigation Control Module - AutoCodes.com — U0163 2015 Toyota RAV4 Code - Lost Communication with Navigation Control Module

What does this mean?

What are the Possible Causes of the DTC U0163 2015 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Navigation Control Module
Navigation Control Module harness is open or shorted
Navigation Control Module circuit poor electrical connection

How to Fix the DTC U0163 2015 Toyota RAV4?

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 does this mean?

Code Tech Notes

When there are problems with the way different systems in a vehicle communicate with each other using a technology called Controller Area Network (CAN) communication, Diagnostic Trouble Codes (DTC) are displayed. These codes can be caused by issues with the main bus or branch of the communication network, or with the Electronic Control Units (ECUs) and sensors that make up the different systems. If you see code for both the CAN communication problems and internal or power source problems at the same time, you should focus on fixing the internal or power source problems first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0163 2015 Toyota RAV4 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.

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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 U0163 2015 Toyota RAV4 Code

1. What does the OBDII code U0163 for a 2015 Toyota RAV4 mean?

This code, U0163, indicates a communication problem between the vehicle's onboard computer system and the Navigation Control Module.

2. What are common symptoms of a U0163 code in a 2015 Toyota RAV4?

Common symptoms include loss of functionality in the navigation system, error messages related to the navigation system, and possibly issues with other vehicle systems that rely on information from the navigation module.

3. What are some possible causes of the U0163 code in a 2015 Toyota RAV4?

Possible causes include a faulty navigation control module, wiring or connection issues between the control module and the vehicle's computer system, or a software glitch within the navigation module.

4. How can I diagnose the U0163 code in my 2015 Toyota RAV4?

Diagnosing the U0163 code typically involves using a diagnostic scanner to retrieve the specific trouble codes, checking the connections and wiring related to the navigation control module, and potentially testing the module itself for proper functionality.

5. Can I still drive my 2015 Toyota RAV4 with a U0163 code?

While the vehicle may still be operable with a U0163 code, it is recommended to address the issue promptly to avoid potential complications with other vehicle systems that rely on the navigation module.

6. How can I repair a U0163 code in my 2015 Toyota RAV4?

Repairing a U0163 code may involve replacing the navigation control module if it is determined to be faulty, repairing any damaged wiring or connections, and resetting the onboard computer system to clear the trouble code.

7. Is it possible to reset the U0163 code in a 2015 Toyota RAV4 without professional help?

While it may be possible to clear the trouble code temporarily by disconnecting the vehicle's battery, it is recommended to have the underlying issue diagnosed and repaired by a professional to prevent the code from reoccurring.

8. Can a U0163 code in a 2015 Toyota RAV4 cause other vehicle problems?

Yes, a U0163 code can potentially cause issues with other vehicle systems that rely on information from the navigation control module, such as the audio system or climate control.

9. How much does it typically cost to repair a U0163 code in a 2015 Toyota RAV4?

The cost of repairing a U0163 code can vary depending on the specific cause of the issue, but it may involve expenses for diagnostic services, replacement parts, and labor.

10. Is the U0163 code a common issue in 2015 Toyota RAV4 vehicles?

While the U0163 code may not be as common as some other OBDII codes, it can still occur in 2015 Toyota RAV4 vehicles due to various factors such as age, wear and tear, or electrical issues.