P0128 2017 Chevrolet Silverado Code - Engine Coolant Temperature Below Thermostat Regulating Temperature
Quick Answer
The P0128 code in a 2017 Chevrolet Silverado indicates that the engine coolant temperature is below the thermostat regulating temperature. Common causes include Faulty thermostat, Low coolant level, Cooling system leaks. 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
- P0128 2017 Chevrolet Silverado indicates Engine Coolant Temperature Below Thermostat Regulating Temperature.
- Common causes
- Common causes include Faulty thermostat, Low coolant level, Cooling system leaks.
- 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 P0128 2017 Chevrolet Silverado Description
The P0128 code in a 2017 Chevrolet Silverado indicates that the engine coolant temperature is below the thermostat regulating temperature. This means that the engine is not reaching the optimal operating temperature within a specified time frame after starting the vehicle. The engine coolant temperature sensor detects the temperature of the coolant and sends this information to the engine control module (ECM). The ECM uses this data to determine if the engine is reaching the proper temperature for efficient operation.
Common Causes of P0128 2017 Chevrolet Silverado
- Faulty thermostat
- Low coolant level
- Cooling system leaks
- Faulty engine coolant temperature sensor
- ECM software issue
Symptoms of P0128 2017 Chevrolet Silverado
- Engine running colder than normal
- Decreased fuel efficiency
- Check Engine Light illuminated
- Poor heater performance in the cabin
How to Fix P0128 2017 Chevrolet Silverado
- Perform a visual inspection of the cooling system for any leaks or damage.
- Check the coolant level and top up if necessary.
- Test the thermostat for proper operation and replace if faulty.
- Inspect the engine coolant temperature sensor and replace if needed.
- Clear the error code and test drive the vehicle to ensure the issue is resolved.
Cost to Fix P0128 2017 Chevrolet Silverado
The cost of repairing the P0128 code in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of replacing a thermostat ranges from $150 to $300, including parts and labor. If additional components need to be replaced, such as the engine coolant temperature sensor, the cost can increase. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate.
Tech Notes for P0128 2017 Chevrolet Silverado
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