AutoCodes – Toyota – C1904 Toyota

C1904 Toyota Code - Protection For Overload Of Rear Actuator

Quick Answer

The Rear Active Stabilizer Control Actuator consists of the rotation angle sensor, relay, motor and other parts. Common causes include Faulty Rear Active Stabilizer Control Actuator, Rear Active Stabilizer Control Actuator harness is open or shorted, Rear Active Stabilizer Control Actuator circuit poor electrical connection. 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: C1904 Toyota indicates Protection For Overload Of Rear Actuator.
Common causes: Common causes include Faulty Rear Active Stabilizer Control Actuator, Rear Active Stabilizer Control Actuator harness is open or shorted, Rear Active Stabilizer Control Actuator circuit poor electrical connection.
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 811

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 Dec 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1904 Toyota Description

The Rear Active Stabilizer Control Actuator consists of the rotation angle sensor, relay, motor and other parts. If a problem related to the rotation angle sensor or actuator drive function of the rear active stabilizer control actuator or rear active stabilizer control ECU occurs.

OBDII Code C1904 Toyota - Protection For Overload Of Rear Actuator - AutoCodes.com — C1904 Toyota Code - Protection For Overload Of Rear Actuator

What does this mean?

What are the Possible Causes of the DTC C1904 Toyota?

Faulty Rear Active Stabilizer Control Actuator
Rear Active Stabilizer Control Actuator harness is open or shorted
Rear Active Stabilizer Control Actuator circuit poor electrical connection
Faulty Rear Active Stabilizer Control ECU

How to Fix the DTC C1904 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1904 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.

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Need more information on how to fix the C1904 Toyota code? Get Access to Factory Service Manuals

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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 C1904 Toyota Code

1. What are the common symptoms of OBDII code C1904 in a Toyota related to the protection for overload of the rear actuator?

- Common symptoms include issues with the rear actuator functionality, such as improper operation or failure to engage.

2. What can cause the OBDII code C1904 to trigger in a Toyota?

- The code C1904 typically triggers when the rear actuator experiences an overload condition, often due to excessive resistance or mechanical issues.

3. How can I diagnose the cause of OBDII code C1904 in my Toyota?

- Diagnosing code C1904 involves inspecting the rear actuator system for any signs of overload, checking for damaged components, and testing the electrical connections.

4. Is it safe to continue driving my Toyota with OBDII code C1904 present?

- It is not advisable to continue driving the vehicle with code C1904 active, as the rear actuator's improper operation can affect the vehicle's stability and safety.

5. Can I reset OBDII code C1904 in my Toyota, or does it require professional repair?

- While you can attempt to clear the code temporarily, it is essential to address the root cause of the issue with the rear actuator to prevent code recurrence.

6. Are there any DIY repair tips for fixing OBDII code C1904 in a Toyota?

- DIY repair tips may include checking and replacing damaged components in the rear actuator system, ensuring proper connections, and addressing any mechanical issues.

7. Will OBDII code C1904 affect the overall performance of my Toyota vehicle?

- Yes, code C1904 can impact the performance of your Toyota by potentially causing issues with the rear actuator and affecting the vehicle's handling and stability.

8. How much can I expect to pay for professional repairs related to OBDII code C1904 in a Toyota?

- The cost of repairs for code C1904 can vary depending on the extent of the issue and the specific components that need to be repaired or replaced. It is recommended to obtain quotes from reputable mechanics.

9. Can extreme weather conditions or off-road driving contribute to triggering OBDII code C1904 in a Toyota?

- Yes, extreme weather conditions or off-road driving can potentially lead to increased stress on the rear actuator, which may contribute to triggering code C1904.

10. Is it necessary to have the rear actuator system inspected regularly to prevent OBDII code C1904 in a Toyota?

- Regular inspections of the rear actuator system, especially before embarking on off-road trips or in extreme weather conditions, can help prevent issues that may trigger code C1904.