The glow plug system is responsible for heating the engine cylinders before they are started, in order to make the engine easier to start and to reduce emissions. If the glow plug system is not working properly, it can cause the engine to be difficult to start, and can also lead to increased emissions.
The specific cause of this code can vary depending on the specific model and year of the truck, as well as the specific configuration of the glow plug system. However, some of the most common causes of this code include:
- Damaged glow plugs
- Faulty glow plug relay
- Wiring issues
- Faulty glow plug controller
- Engine coolant temperature sensor issues
- PCM issues
To diagnose the cause of this code, a qualified technician will likely use a diagnostic tool to read the fault codes from the engine control module (ECM), and to test the operation of the glow plug system. Once the cause of the code has been diagnosed, the technician can then repair or replace the faulty components as necessary.
