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B1390 2017 Chevrolet Silverado Code - Control Module Supply Circuit 1

Quick Answer

The B1390 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Control Module Supply Circuit 1. Common causes include Faulty Wiring: Damaged or corroded wiring in the control module supply circuit can prevent proper power delivery, Blown Fuse: A blown fuse in the circuit can interrupt the power supply to the control module, Faulty Control Module: The control module itself may be malfunctioning, causing issues with power reception. 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
B1390 2017 Chevrolet Silverado indicates Control Module Supply Circuit 1.
Common causes
Common causes include Faulty Wiring: Damaged or corroded wiring in the control module supply circuit can prevent proper power delivery, Blown Fuse: A blown fuse in the circuit can interrupt the power supply to the control module, Faulty Control Module: The control module itself may be malfunctioning, causing issues with power reception.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1390 2017 Chevrolet Silverado Description

The B1390 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Control Module Supply Circuit 1. This code indicates that there is a malfunction in the circuit responsible for supplying power to a specific control module within the vehicle's electrical system. The control module in question could be related to various systems in the vehicle, such as the engine control module, transmission control module, body control module, or others.

OBDII Code B1390 2017 Chevrolet Silverado - Control Module Supply Circuit 1
B1390 2017 Chevrolet Silverado Code - Control Module Supply Circuit 1

Common Causes of B1390 2017 Chevrolet Silverado

  1. Faulty Wiring: Damaged or corroded wiring in the control module supply circuit can prevent proper power delivery.
  2. Blown Fuse: A blown fuse in the circuit can interrupt the power supply to the control module.
  3. Faulty Control Module: The control module itself may be malfunctioning, causing issues with power reception.
  4. Poor Ground Connection: A poor ground connection can disrupt the flow of electricity in the circuit.
  5. Battery Issues: Low battery voltage or a weak battery can impact the power supply to the control module.

Symptoms of B1390 2017 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Engine Performance Issues: The vehicle may experience a decrease in engine performance, such as rough idling, misfiring, or lack of power.
  3. Transmission Problems: Shifting issues, including harsh or delayed shifting, may occur due to the control module not receiving proper power.
  4. Electrical Malfunctions: Various electrical components in the vehicle, such as power windows, door locks, or lights, may not function correctly.
  5. Complete System Failure: In severe cases, the affected control module may fail completely, leading to the complete shutdown of the associated systems.

How to Fix B1390 2017 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and pinpoint the exact cause of the problem.
  2. Inspect Wiring and Connections: Check the wiring and connections in the control module supply circuit for any damage, corrosion, or loose connections.
  3. Test Fuses: Inspect and test the fuses related to the circuit to identify any blown fuses that need replacement.
  4. Check Control Module: Test the control module to determine if it is functioning correctly or if it needs to be replaced.
  5. Repair or Replace Components: Depending on the findings, repair or replace any damaged wiring, connections, fuses, or the control module itself.

Cost to Fix B1390 2017 Chevrolet Silverado

The typical repair costs for addressing a B1390 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $50 to $300, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $600. It is important to note that these estimates are rough averages, and actual costs may differ based on factors such as location, labor rates, and the need for additional repairs. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

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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 B1390 2017 Chevrolet Silverado Code

1. What does the OBDII code B1390 mean on a 2017 Chevrolet Silverado?

B1390 indicates an issue with "Control Module Supply Circuit 1," meaning the control module may not be receiving proper voltage or has a power supply issue.

2. What are common symptoms of the B1390 code on a 2017 Silverado?

Symptoms may include warning lights on the dashboard, intermittent electrical issues, failure of certain systems like lights or climate control, or the vehicle not starting.

3. What causes the B1390 code to appear on a 2017 Chevrolet Silverado?

Common causes include a blown fuse, damaged wiring, a faulty control module, poor ground connection, or a weak battery.

4. How do I diagnose the B1390 code on my Silverado?

Start by checking fuses, inspecting wiring for damage or corrosion, testing the battery voltage, and verifying ground connections. A scan tool can help pinpoint the issue.

5. Can a weak battery trigger the B1390 code in a 2017 Silverado?

Yes, a weak or failing battery can cause insufficient voltage to the control module, triggering the B1390 code.

6. Is it safe to drive with the B1390 code on my 2017 Silverado?

It depends on the severity of the issue. If critical systems are affected, it may not be safe to drive. Have it diagnosed and repaired promptly.

7. How can I fix the B1390 code on my Silverado?

Repair steps may include replacing a blown fuse, repairing damaged wiring, cleaning ground connections, or replacing a faulty control module.

8. Can the B1390 code clear itself after repairs?

In some cases, the code may clear itself after resolving the issue. If not, use a scan tool to manually clear the code.

9. How much does it cost to fix the B1390 code on a 2017 Chevrolet Silverado?

Repair costs vary depending on the root cause but can range from $50 for a simple fuse replacement to $500 or more for control module replacement.

10. Can a software update resolve the B1390 code on my Silverado?

In rare cases, if the control module is functioning but experiencing software glitches, a dealership may recommend a software update to resolve the issue.

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