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Code U0145

Symptoms

• Inoperative interior lights

• Inoperative power locks

• Inoperative power windows

Common Causes

• Faulty Body Control Module (BCM)

• Wiring issues such as broken or corroded wires

• Faulty connectors or loose connections

Glossary

BCM: Body Control Module

ECU: Engine Control Unit

Related Codes

• U0140

• U0141

Laymans terms

This code means that the car's computer can't talk to the Body Control Module (BCM), which is like the car's brain for things like lights and locks.

Explanation

The U0145 code indicates a loss of communication with the Body Control Module (BCM).

Technical description

U0145 is a diagnostic trouble code (DTC) that signifies a communication problem between the vehicle's main computer (ECU) and the Body Control Module (BCM). This communication is crucial for the proper functioning of various body-related systems.

Diagnosis steps

• Check for other codes that might indicate a related issue.

• Inspect the wiring and connectors leading to the BCM.

• Test the BCM for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the Body Control Module if it is faulty.

• Ensure all connections are secure and free of corrosion.

Tools required

• OBD-II scanner

• Multimeter

• Wiring diagram

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect and maintain vehicle wiring.

• Avoid exposure of electrical components to moisture.

• Perform regular vehicle diagnostics to catch issues early.

Error code type

Communication Error

User experience recommendations

• Have the vehicle inspected by a professional if you notice electrical issues.

• Do not ignore warning lights on the dashboard.

• Regular maintenance can prevent such issues.

Warranty information

Check with your vehicle manufacturer as some BCM issues may be covered under warranty.

Historical data

Communication error codes like U0145 have become more common as vehicles have become more reliant on electronic control modules.

Urgency level

Moderate – While the vehicle may still operate, certain features may not work, affecting convenience and safety.

Legal and safety notice

Ignoring communication issues can lead to safety features being inoperative, which may be a legal concern depending on local laws.

Testing conditions

• Vehicle ignition in the ON position

• Ensure all electrical systems are active

Component location

The Body Control Module is typically located under the dashboard or in the engine compartment.

FAQs

Q: What happens if I ignore the U0145 code?
A: Ignoring this code can lead to malfunctioning of various body-related systems like lights and locks, which can be inconvenient and potentially unsafe.

Q: Can I drive my car with a U0145 code?
A: While you can drive, some features may not work properly, so it's best to address the issue promptly.

Last updated: Oct 7, 2025 • Source: internal database
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