AutoCodes – Toyota – U0208 Toyota

U0208 Toyota 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 Toyota 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 1,406

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

What does this mean?

What are the Possible Causes of the DTC U0208 Toyota?

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 Toyota?

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 Toyota 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 U0208 Toyota code?

Need more information on how to fix the U0208 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0208 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

U0208 2013 Toyota RAV4 — Lost Communication with Seat Control Module 'A'
U0208 2014 Toyota RAV4 — Lost Communication with Seat Control Module 'A'
U0208 2015 Toyota RAV4 — Lost Communication with Seat Control Module 'A'
U0208 2016 Toyota RAV4 — Lost Communication with Seat Control Module 'A'
U0208 2017 Toyota RAV4 — Lost Communication with Seat Control Module 'A'
U0208 2018 Toyota RAV4 — Lost Communication with Seat Control Module 'A'

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 Toyota Code

1. What does the OBDII code U0208 mean for a Toyota?

U0208 indicates a loss of communication between the vehicle's Seat Control Module 'A' and other modules on the Controller Area Network (CAN).

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

Symptoms may include malfunctioning seat adjustments, loss of memory seat settings, or no response from the seat control switches.

3. What causes the U0208 code to appear in a Toyota?

Common causes include a faulty Seat Control Module 'A', wiring issues like damaged or disconnected harnesses, or problems with the CAN bus network.

4. Can a dead battery trigger the U0208 code in a Toyota?

Yes, a dead or weak battery may interrupt communication between modules and cause this code to appear.

5. How do you diagnose the U0208 code in a Toyota?

Diagnosis typically involves scanning for additional codes, inspecting wiring and connectors for damage, testing the Seat Control Module, and checking the CAN bus network for faults.

6. Is it safe to drive with the U0208 code in a Toyota?

Yes, it is generally safe to drive, but seat functionality may be limited, and the issue should be addressed promptly to prevent further electrical problems.

7. How can the U0208 code be fixed on a Toyota?

Repairs may include replacing or reprogramming the Seat Control Module, fixing damaged wiring or connectors, or resolving CAN bus network issues.

8. Does the U0208 code require module replacement in all cases?

No, sometimes the issue can be resolved by repairing wiring, clearing the code, or updating the software without replacing the module.

9. Can the U0208 code reset itself after repairs?

In some cases, the code may reset itself after repairing communication issues, but clearing the code with a scan tool is often recommended.

10. How much does it cost to repair a U0208 code in a Toyota?

Costs vary depending on whether wiring repairs, module replacement, or reprogramming is needed, with typical expenses ranging from $150 to $800.

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