AutoCodes – Cadillac – B1328 Cadillac

B1328 Cadillac Code - Device Power Circuit High

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Battery voltage, Faulty Control Module, Control Module 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
B1328 Cadillac indicates Device Power Circuit High.
Common causes
Common causes include Battery voltage, Faulty Control Module, Control Module 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 1,893
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 29, 2024
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Code B1328 Cadillac Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).
OBDII Code B1328 Cadillac - Device Power Circuit High - AutoCodes.com
B1328 Cadillac Code - Device Power Circuit High

What are the Possible Causes of the DTC B1328 Cadillac?

  • Battery voltage
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

How to Fix the DTC B1328 Cadillac?

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 B1328 Cadillac 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 B1328 Cadillac code?

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Need Help with the Code?

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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 B1328 Cadillac Code

1. What are the common symptoms of OBDII code B1328 in a Cadillac related to the Device Power Circuit High?

- Common symptoms include issues with power windows, power door locks, interior lights, and other electrical components not functioning properly.

2. What are the possible causes of the Device Power Circuit High code (B1328) in a Cadillac?

- Possible causes include a faulty power supply to the affected devices, wiring issues, blown fuses, a malfunctioning control module, or a short circuit.

3. How can I diagnose the Device Power Circuit High code (B1328) in my Cadillac?

- To diagnose this code, you can start by checking the fuses related to the affected components, inspecting the wiring for any visible damage, and using a multimeter to test the power supply to the devices.

4. Can a DIY enthusiast repair the Device Power Circuit High issue (B1328) in a Cadillac?

- Depending on the specific cause of the issue, DIY enthusiasts may be able to repair it by replacing blown fuses, repairing damaged wiring, or resetting the control module. However, more complex issues may require professional assistance.

5. Is it safe to continue driving my Cadillac with the Device Power Circuit High code (B1328) present?

- It is not recommended to drive your Cadillac with this code present, as it can lead to further electrical issues and potentially cause safety hazards. It is best to address the problem as soon as possible.

6. How much does it typically cost to repair the Device Power Circuit High code (B1328) in a Cadillac?

- The cost of repairing this code can vary depending on the specific cause of the issue and whether you choose to DIY or seek professional help. Costs may range from a few dollars for a blown fuse replacement to a few hundred dollars for more complex repairs.

7. Can extreme weather conditions cause the Device Power Circuit High code (B1328) to trigger in a Cadillac?

- Yes, extreme weather conditions such as very high temperatures or moisture can sometimes lead to electrical issues triggering this code. It's important to keep your vehicle protected and well-maintained in all weather conditions.

8. Will resetting the OBDII system clear the Device Power Circuit High code (B1328) in a Cadillac?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.

9. Are there any preventive measures to avoid the Device Power Circuit High issue (B1328) in a Cadillac?

- Regularly checking and maintaining the electrical components in your Cadillac, such as fuses, wiring, and control modules, can help prevent issues like the Device Power Circuit High code from occurring.

10. Can a weak car battery cause the Device Power Circuit High code (B1328) to trigger in a Cadillac?

- Yes, a weak or failing car battery can sometimes cause electrical issues, including the Device Power Circuit High code. It's advisable to have your battery tested and replaced if necessary to avoid such problems.

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