C1928 Lexus 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 Lexus 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.
Code C1928 Lexus Description
What are the Possible Causes of the DTC C1928 Lexus?
- 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 Lexus?
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 Lexus 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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Frequently Asked Questions about C1928 Lexus Code
1. What does the OBDII code C1928 mean for a Lexus?
The C1928 code indicates a malfunction in the DC/DC converter, which is responsible for converting high-voltage power from the hybrid battery to a lower voltage for the vehicle's 12V electrical systems.
2. What are the common symptoms of the C1928 code in a Lexus?
Symptoms may include a warning light on the dashboard, issues with 12V electrical components, dim headlights, or the vehicle failing to start.
3. What causes the C1928 code to appear in a Lexus?
Common causes include a faulty DC/DC converter, damaged wiring or connectors, or issues with the hybrid battery system.
4. Can I drive my Lexus with the C1928 code?
Driving with this code is not recommended, as a malfunctioning DC/DC converter can lead to electrical system failure and potentially leave you stranded.
5. How is the C1928 code diagnosed in a Lexus?
A technician will use a scan tool to confirm the code, inspect the DC/DC converter, check the wiring and connectors, and test the hybrid battery system.
6. What repairs are needed to fix the C1928 code in a Lexus?
Repairs may include replacing the DC/DC converter, repairing or replacing damaged wiring or connectors, or addressing issues with the hybrid battery.
7. How much does it cost to fix the C1928 code in a Lexus?
Repair costs vary depending on the specific issue, but replacing a DC/DC converter can range from $1,000 to $2,500, including parts and labor.
8. Can low 12V battery voltage cause the C1928 code to appear?
Yes, a weak or failing 12V battery can trigger this code, as the DC/DC converter may struggle to maintain proper voltage levels.
9. How can I prevent the C1928 code from occurring in my Lexus?
Regular maintenance, including checking the 12V battery and ensuring the hybrid system is functioning properly, can help prevent this issue.
10. Is the C1928 code specific to hybrid Lexus models?
Yes, this code is specific to hybrid Lexus vehicles, as it relates to the DC/DC converter, which is a critical component of hybrid powertrains.
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