AutoCodesGeneric – B1325:03

B1325:03 Code - Control Module Power Circuit Low Voltage

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 Faulty Control Module Power, Control Module Power harness is open or shorted, Control Module Power 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
B1325:03 indicates Control Module Power Circuit Low Voltage.
Common causes
Common causes include Faulty Control Module Power, Control Module Power harness is open or shorted, Control Module Power 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 4,290
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 12, 2022
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Code B1325:03 Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Powertrain Control Module (PCM) sets the OBDII code when the system voltage is less than 9 volts for 5 seconds. The following control modules will set this Diagnostic Trouble Code (DTC): Body Control Module (BCM), Instrument Panel Cluster (IPC), Radio and Sensing and Diagnostic Module (SDM).
OBDII Code B1325:03 - Control Module Power Circuit Low Voltage - AutoCodes.com
B1325:03 Code - Control Module Power Circuit Low Voltage

What are the Possible Causes of the DTC B1325:03?

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

How to Fix the DTC B1325:03?

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 B1325:03 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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Information for Specific Makes

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 B1325:03 Code

1. What does OBDII code B1325:03 mean?

Code B1325:03 indicates low voltage in the control module power circuit, which can affect the proper operation of the vehicle's electrical systems.

2. What are the common symptoms of code B1325:03?

Common symptoms include dim or flickering interior/exterior lights, intermittent electronic system failures, and difficulty starting the vehicle.

3. What causes code B1325:03 to appear?

Typical causes include a weak or failing battery, loose or corroded battery terminals, faulty wiring, or issues with the alternator.

4. Can a bad alternator trigger code B1325:03?

Yes, a failing alternator can cause low voltage in the control module power circuit, leading to this code.

5. How do I diagnose code B1325:03?

Start by checking the battery voltage, inspecting battery connections for corrosion or looseness, and testing the alternator output. Also, check the wiring and fuses associated with the affected control module.

6. Is it safe to drive with code B1325:03?

Driving with this code may lead to unreliable vehicle performance, as low voltage can disrupt critical systems. It's best to address the issue promptly.

7. How do I fix code B1325:03?

Repairs may include replacing or charging the battery, cleaning or tightening battery terminals, repairing damaged wiring, or replacing a faulty alternator.

8. Will clearing the code fix B1325:03?

Clearing the code without addressing the underlying issue will likely result in the code reappearing. Proper diagnosis and repair are necessary.

9. Can a discharged battery cause code B1325:03?

Yes, a discharged or weak battery can result in low voltage, triggering this code.

10. What tools are needed to troubleshoot code B1325:03?

You’ll need a digital multimeter to test voltage, an OBDII scanner to read and clear codes, and possibly a battery tester to assess battery health.

Discuss the causes and fixes for B1325:03 OBDII Code

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