AutoCodes – Toyota – C1928 Toyota

C1928 Toyota Code - Malfunction In DC/DC Converter

Quick Answer

The Active Stabilizer Converter supplies operating power to the Rear Active Stabilizer Control ECU from the rear active stabilizer control actuator. Common causes include Faulty Active Stabilizer Converter, Active Stabilizer Converter harness is open or shorted, Active Stabilizer Converter 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
C1928 Toyota indicates Malfunction In DC/DC Converter.
Common causes
Common causes include Faulty Active Stabilizer Converter, Active Stabilizer Converter harness is open or shorted, Active Stabilizer Converter 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 922
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 03, 2020
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Code C1928 Toyota Description

The Active Stabilizer Converter supplies operating power to the Rear Active Stabilizer Control ECU from the rear active stabilizer control actuator. Also, when the battery (for active stabilizer) voltage is low, the active stabilizer converter charges it. If a problem occurs in the rear active stabilizer control ECU, rear active stabilizer control actuator, battery (for active stabilizer) and PIG power source circuit, DTC is stored.
OBDII Code C1928 Toyota - Malfunction In DC/DC Converter - AutoCodes.com
C1928 Toyota Code - Malfunction In DC/DC Converter

What are the Possible Causes of the DTC C1928 Toyota?

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

How to Fix the DTC C1928 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 C1928 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 C1928 Toyota code?

Need more information on how to fix the C1928 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1928 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 C1928 Toyota Code

1. What are common symptoms of OBDII code C1928 in a Toyota related to a malfunction in the DC/DC converter?

- Common symptoms include reduced fuel efficiency, loss of power, and the illumination of the check engine light.

2. What are possible causes of the OBDII code C1928 indicating a malfunction in the DC/DC converter in a Toyota?

- Possible causes include a faulty DC/DC converter, wiring issues, or a malfunctioning hybrid battery.

3. How can I diagnose the OBDII code C1928 in my Toyota indicating a malfunction in the DC/DC converter?

- A comprehensive diagnosis using a professional OBDII scanner is recommended to pinpoint the exact issue with the DC/DC converter.

4. Can driving with the OBDII code C1928 related to a malfunction in the DC/DC converter harm my Toyota?

- Continuing to drive with this issue can potentially cause further damage to the vehicle's electrical system, so it is best to address it promptly.

5. Are there any quick repair tips for addressing the OBDII code C1928 in a Toyota due to a malfunction in the DC/DC converter?

- Quick tips include checking the wiring connections to the converter, ensuring the hybrid battery is functioning properly, and consulting a professional for a thorough inspection.

6. Is it safe to drive my Toyota with the OBDII code C1928 indicating a malfunction in the DC/DC converter temporarily?

- It is generally not recommended to drive the vehicle for an extended period with this issue as it can impact the overall performance and safety of the vehicle.

7. How much does it typically cost to repair the OBDII code C1928 in a Toyota due to a malfunction in the DC/DC converter?

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for potentially significant repair expenses.

8. Can I reset the OBDII code C1928 related to a malfunction in the DC/DC converter in my Toyota on my own?

- While you can attempt to clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

9. What are the long-term implications of ignoring the OBDII code C1928 in a Toyota indicating a malfunction in the DC/DC converter?

- Ignoring this issue can lead to more severe electrical problems in the vehicle, potentially resulting in costly repairs down the line.

10. Is the OBDII code C1928 Toyota related to a malfunction in the DC/DC converter a common issue in hybrid vehicles?

- Yes, issues with the DC/DC converter can be relatively common in hybrid vehicles like Toyota due to the complex nature of their electrical systems.

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