DTC B1380 CHEVROLET

23.09.2025
Author:Ihor Koziar. Reviewed by:Lisa Morgan
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B1380

Body systems
Code: B1380 - The accessory (ACC) circuit in the ignition system has a malfunction, which may affect power to features like the radio or power outlets when the key is in ACC mode.

When you encounter error code B1380 on your Chevrolet, it signals problems with the ignition device circuit - one of the most important parts of the vehicle's starting system. But what does this mean for you, as the car owner? Let's break it down!

B1380 appears when your vehicle's system detects a fault in the ACC circuit (the system responsible for ignition). ACC is a kind of "first step" before your vehicle’s engine starts working. If the ignition device circuit is not functioning properly, it can lead to issues with starting the car. It's important not to ignore this error, as it can affect the vehicle's reliability.

Causes of B1380 on Chevrolet?

  • Wiring or connector failure: Sometimes, the issue lies in weakened or damaged connections. A bad connection in the connector can prevent the ignition system from working properly.
  • Ignition device failure: The ignition device itself, which is responsible for sending a signal to the starter, can fail. This is a rare but possible cause.
  • Ignition control module issues: If the electronic ignition control module is not working correctly, the ACC circuit may not receive the necessary signals, leading to this error.

Which Chevrolet models frequently encounter error B1380?

This error is most commonly found on the following Chevrolet models:

  • Chevrolet Malibu
  • Chevrolet Cruze
  • Chevrolet Cobalt
  • Chevrolet Epica
  • Chevrolet Aveo
  • Chevrolet Lacetti

On these vehicles, ACC circuit issues are often caused by worn wiring or a faulty ignition device. If your car belongs to one of these models and you see error B1380, don’t panic, but pay attention to a few possible causes.

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How to fix code B1380 on Chevrolet?

Don't panic right away! Here are a few steps that can help fix the error:

  • Check the wiring and connectors: Inspect the connectors for corrosion or loose connections. Oxidation or poor contact is the most common cause.
  • Check the ignition device itself: If the device is worn out, it may affect the circuit’s normal operation. Sometimes it can be replaced, and the error will go away.
  • Check the control module: Sometimes the cause could be a malfunction in the control module. If it is faulty, it needs to be replaced.
  • Professional diagnostics: If you cannot identify the issue or are unsure about what to do, it's best to visit a service center for deeper diagnostics and repairs.
dtc b1380 Chevrolet

Conclusion

Error B1380 on your Chevrolet is not a critical problem, but it does require attention. The main cause is a fault in the ACC ignition device circuit, which may hinder engine starting. The problem is usually related to worn wiring or faulty ignition components, and it can be resolved fairly quickly.

Don't delay the solution - clean the connectors, check the ignition device, and if necessary, consult specialists. Solving this issue will help you avoid bigger starting problems in the future.

Other OBD-2 errors of Chevrolet
The following error codes are often searched for
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