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B1425 Control Module Power Circuit

OBD2 Code: B1425

Description: Control Module Power Circuit

Definition: This code indicates a problem with the power supply circuit to the control module. It may be caused by issues such as a blown fuse, faulty wiring, or a malfunctioning control module.

b1425 – Control Module Power Circuit

Severity: Moderate

Common Causes

b1425 control module power circuit

Common causes:

• Faulty control module
• Short circuit in the power circuit wiring
• Loose or corroded electrical connections

Common Misdiagnosis

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OBD2 Code: B1425

Description: Control Module Power Circuit

Common Misdiagnosis: Faulty control module when the actual issue is a blown fuse or poor electrical connection.

Common Diagnostic Steps

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OBD2 Code: B1425 – Control Module Power Circuit

Description: This code indicates an issue with the power supply to the control module.

Common Diagnostic Steps:

• Check the battery voltage and ensure it is within the specified range.
• Inspect all related fuses for continuity and replace any blown fuses.
• Examine wiring harnesses and connectors for signs of damage, corrosion, or loose connections.
• Test the power and ground circuits at the control module using a multimeter to confirm proper voltage and ground presence.
• If equipped, check for any aftermarket accessories that may be affecting the circuit’s performance.
• Consult vehicle-specific repair manuals or technical service bulletins (TSBs) for additional troubleshooting steps related to this code.
• If no issues are found in the external components, consider testing or replacing the control module itself as a last resort.