P1687 GMC Code - Fuel Injector Control Module Driver Stuck On
Quick Answer
The P1687 diagnostic trouble code (DTC) in a GMC vehicle indicates that the fuel injector control module driver is stuck on. Common causes include Electrical faults such as short circuits or damaged wiring, Faulty fuel injector control module, Corrosion or loose connections in the electrical system. 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
- P1687 GMC indicates Fuel Injector Control Module Driver Stuck On.
- Common causes
- Common causes include Electrical faults such as short circuits or damaged wiring, Faulty fuel injector control module, Corrosion or loose connections in the electrical system.
- 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 P1687 GMC Description
The P1687 diagnostic trouble code (DTC) in a GMC vehicle indicates that the fuel injector control module driver is stuck on. This means that there is a malfunction in the fuel injector control module, which is responsible for controlling the fuel injectors in the engine. The fuel injector control module plays a crucial role in regulating the fuel delivery to the engine cylinders, ensuring the proper air-fuel mixture for combustion. When this driver is stuck on, it can lead to various performance issues and potentially cause long-term damage to the vehicle if not addressed promptly.
Common Causes of P1687 GMC
- Electrical faults such as short circuits or damaged wiring
- Faulty fuel injector control module
- Corrosion or loose connections in the electrical system
- Issues with the engine control module (ECM)
- Environmental factors such as moisture or heat exposure
Symptoms of P1687 GMC
- Rough idle or engine misfire
- Hesitation or stalling during acceleration
- Decreased fuel efficiency
- Increase in emissions
- Check Engine Light illuminated
How to Fix P1687 GMC
- Diagnose the issue by using a scan tool to retrieve the trouble code and inspecting the fuel injector control module and related wiring for any visible damage.
- Test the fuel injector control module's functionality and replace it if necessary.
- Check and repair any electrical faults, such as repairing damaged wiring or replacing corroded connectors.
- Clear the trouble code from the vehicle's ECM and test drive the vehicle to ensure the issue has been resolved.
- Perform a final inspection to verify that the repair was successful and that the vehicle is operating properly.
Cost to Fix P1687 GMC
The cost of repairing a P1687 code in a GMC vehicle can vary depending on the specific model, year, and the extent of the issue. On average, the repair costs for this code can range from $200 to $500, including parts and labor. It is important to note that the diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It is recommended to obtain a detailed estimate from a qualified mechanic to determine the exact cost of repairing this issue.
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