AutoCodes – Toyota – C194E Toyota

C194E Toyota Code - Deterioration Of Sub Battery

Quick Answer

The active stabilizer suspension system has its own battery. Common causes include Faulty Battery (for active stabilizer), Faulty Active stabilizer converter, Faulty Rear active stabilizer control 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: C194E Toyota indicates Deterioration Of Sub Battery.
Common causes: Common causes include Faulty Battery (for active stabilizer), Faulty Active stabilizer converter, Faulty Rear active stabilizer control 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 1,211

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C194E Toyota Description

The active stabilizer suspension system has its own battery. If a problem occurs in the battery (for active stabilizer) charging circuit, DTCs C1925/15 and C194E/19 are stored.

OBDII Code C194E Toyota - Deterioration Of Sub Battery - AutoCodes.com — C194E Toyota Code - Deterioration Of Sub Battery

What does this mean?

What are the Possible Causes of the DTC C194E Toyota?

Faulty Battery (for active stabilizer)
Faulty Active stabilizer converter
Faulty Rear active stabilizer control ECU
Faulty Active stabilizer current sensor
Active stabilizer current sensor harness is open or shorted
Active stabilizer current sensor circuit poor electrical connection

How to Fix the DTC C194E 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 C194E 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 C194E Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C194E Toyota code diagnosed by a professional: Find a repair shop in your area

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 C194E Toyota Code

1. What are the common symptoms of OBDII code C194E in a Toyota related to the deterioration of the sub battery?

- The common symptoms include difficulty starting the vehicle, decreased fuel efficiency, and issues with the hybrid system.

2. What are the possible causes of OBDII code C194E indicating sub battery deterioration in a Toyota?

- The main causes can be related to the aging of the sub battery, poor charging system performance, or internal battery faults.

3. How can I diagnose the sub battery deterioration issue indicated by code C194E in my Toyota?

- To diagnose the issue, it is recommended to perform a thorough battery and charging system test using diagnostic tools or seeking professional assistance.

4. What are the potential risks of ignoring the OBDII code C194E related to the sub battery deterioration in a Toyota?

- Ignoring the code can lead to complete sub battery failure, which may result in the vehicle not starting or other electrical system malfunctions.

5. Can I continue driving my Toyota with the OBDII code C194E indicating sub battery deterioration?

- It is not recommended to continue driving the vehicle with this code, as it may lead to further damage to the electrical system and potential safety hazards.

6. How can I repair the sub battery deterioration issue causing OBDII code C194E in my Toyota?

- The repair may involve replacing the sub battery with a new unit, ensuring proper charging system functionality, and resetting the fault code using diagnostic equipment.

7. Are there any preventive maintenance tips to avoid OBDII code C194E related to sub battery deterioration in a Toyota?

- Regularly inspecting the sub battery, following the manufacturer's maintenance schedule, and avoiding deep discharges can help prevent this issue.

8. How long does it typically take to repair the sub battery deterioration issue indicated by OBDII code C194E in a Toyota?

- The repair time can vary depending on the extent of the damage and availability of parts, but it usually takes a few hours to a day at a professional repair shop.

9. Will resetting the OBDII code C194E related to sub battery deterioration in my Toyota solve the underlying issue?

- Resetting the code without addressing the sub battery deterioration issue will not fix the problem and may lead to recurring fault codes in the future.

10. Is it possible to clear the OBDII code C194E indicating sub battery deterioration in a Toyota without replacing the sub battery?

- While it may be possible to clear the code temporarily, replacing the deteriorated sub battery is essential for a lasting solution and to prevent further issues.