AutoCodes – Toyota – U0208 2018 Toyota RAV4

U0208 2018 Toyota RAV4 Code - Lost Communication with Seat Control Module 'A'

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 Seat Control Module 'A', Seat Control Module 'A' 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: U0208 2018 Toyota RAV4 indicates Lost Communication with Seat Control Module 'A'.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Seat Control Module 'A', Seat Control Module 'A' 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 246

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 28, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0208 2018 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 Seat Control Module 'A' has not been received.

OBDII Code U0208 2018 Toyota RAV4 - Lost Communication with Seat Control Module 'A' - AutoCodes.com — U0208 2018 Toyota RAV4 Code - Lost Communication with Seat Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0208 2018 Toyota RAV4?

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

How to Fix the DTC U0208 2018 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 U0208 2018 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 U0208 2018 Toyota RAV4 Code

1. What does the OBDII code U0208 mean on a 2018 Toyota RAV4?

U0208 indicates that the vehicle's main control module has lost communication with Seat Control Module 'A'.

2. What are common symptoms of the U0208 code in a Toyota RAV4?

Symptoms may include non-responsive seat adjustments, malfunctioning seat memory functions, or an illuminated check engine or warning light.

3. What causes the U0208 code to appear on a 2018 Toyota RAV4?

Possible causes include damaged wiring or connectors, a malfunctioning Seat Control Module 'A', or issues with the vehicle's CAN (Controller Area Network) communication.

4. Can a weak battery cause the U0208 code?

Yes, a weak or failing battery can disrupt communication between modules and trigger the U0208 code.

5. How do I diagnose the U0208 code on my 2018 Toyota RAV4?

Start by inspecting the wiring and connectors to Seat Control Module 'A', check the CAN bus system for faults, and use a scan tool to test for communication with the module.

6. Is it safe to drive with the U0208 code active?

Yes, the vehicle is generally safe to drive, but seat adjustments and related features may not function properly. Address the issue to restore full functionality.

7. How do I fix the U0208 code on a Toyota RAV4?

Repairs may include fixing or replacing damaged wiring, repairing loose connectors, reprogramming modules, or replacing a faulty Seat Control Module 'A'.

8. Could a blown fuse cause the U0208 code?

Yes, a blown fuse related to the Seat Control Module 'A' can interrupt communication and trigger the U0208 code.

9. How much does it cost to repair the U0208 code on a 2018 Toyota RAV4?

Repair costs vary depending on the issue, but diagnostics alone typically range from $100 to $150, with additional costs for parts and labor.

10. Can I clear the U0208 code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue is not resolved.

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