P1381 GMC Code - Misfire Detected - No Communication with Brake Control Module
Quick Answer
The P1381 code for GMC vehicles indicates a misfire has been detected, along with a lack of communication with the Brake Control Module. Common causes include Faulty wiring or connections between the ECM and Brake Control Module, Malfunctioning ECM or Brake Control Module, Communication error within the vehicle's network. 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
- P1381 GMC indicates Misfire Detected - No Communication with Brake Control Module.
- Common causes
- Common causes include Faulty wiring or connections between the ECM and Brake Control Module, Malfunctioning ECM or Brake Control Module, Communication error within the vehicle's network.
- 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 P1381 GMC Description
The P1381 code for GMC vehicles indicates a misfire has been detected, along with a lack of communication with the Brake Control Module. This code typically points to an issue where the Engine Control Module (ECM) is unable to communicate with the Brake Control Module, which can lead to a misfire in the engine. When the ECM and Brake Control Module are not communicating effectively, it can cause the engine to run rough, experience hesitation, reduced power, decreased fuel efficiency, and potentially cause further damage to the vehicle if not addressed promptly.
Common Causes of P1381 GMC
- Faulty wiring or connections between the ECM and Brake Control Module
- Malfunctioning ECM or Brake Control Module
- Communication error within the vehicle's network
- Corrosion or damage to electrical components
- Software issues within the vehicle's systems
Symptoms of P1381 GMC
- Engine misfires or runs rough
- Decreased engine performance
- Hesitation or stumbling during acceleration
- Reduced fuel efficiency
- Illumination of the check engine light
How to Fix P1381 GMC
- Diagnose the specific cause of the misfire and lack of communication with a diagnostic scan tool.
- Inspect and test the wiring and connections between the ECM and Brake Control Module for any faults or damage.
- Check for any corrosion or damage to electrical components related to the communication system.
- Replace any faulty wiring, connectors, or components as needed.
- Clear the diagnostic trouble codes, reset the ECM, and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1381 GMC
The cost of repairing a misfire detected with no communication with the Brake Control Module can vary depending on the specific cause of the issue. Typically, the cost of parts for this repair could range from $100 to $500, while the labor costs could range from $150 to $300. However, it's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle type.
Tech Notes for P1381 GMC
When is the Code Detected?
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