P0087 GMC Code - Fuel Rail Low Pressure
Quick Answer
The P0087 GMC diagnostic trouble code refers to a fuel rail low pressure condition. Common causes include Malfunctioning Fuel Pump: A failing or weak fuel pump may not be able to maintain adequate fuel pressure in the fuel rail, Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow, causing low fuel pressure, Faulty Fuel Pressure Regulator: A faulty fuel pressure regulator can lead to inconsistent fuel pressure levels. 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
- P0087 GMC indicates Fuel Rail Low Pressure.
- Common causes
- Common causes include Malfunctioning Fuel Pump: A failing or weak fuel pump may not be able to maintain adequate fuel pressure in the fuel rail, Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow, causing low fuel pressure, Faulty Fuel Pressure Regulator: A faulty fuel pressure regulator can lead to inconsistent fuel pressure levels.
- 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 P0087 GMC Description
The P0087 GMC diagnostic trouble code refers to a fuel rail low pressure condition. This means that the fuel pressure in the fuel rail is below the manufacturer's specified range, which can lead to various issues with the vehicle's performance and drivability. The fuel rail is a crucial component in the fuel system that supplies pressurized fuel to the fuel injectors. If the fuel pressure is too low, it can result in poor engine performance, misfires, hesitation, and even stalling.
Common Causes of P0087 GMC
- Malfunctioning Fuel Pump: A failing or weak fuel pump may not be able to maintain adequate fuel pressure in the fuel rail.
- Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow, causing low fuel pressure.
- Faulty Fuel Pressure Regulator: A faulty fuel pressure regulator can lead to inconsistent fuel pressure levels.
- Leaking Fuel Injector: A leaking fuel injector can result in fuel pressure loss and low fuel rail pressure.
- Defective Fuel Pressure Sensor: A malfunctioning fuel pressure sensor can provide incorrect readings, triggering the P0087 trouble code.
Symptoms of P0087 GMC
- Check Engine Light: The most common symptom associated with the P0087 code is the illumination of the check engine light on the vehicle's dashboard.
- Rough Idle: The engine may idle roughly or inconsistently when the fuel pressure is low.
- Hesitation or Stalling: The vehicle may hesitate or stall when accelerating due to inadequate fuel pressure.
- Reduced Power: A noticeable decrease in engine power and performance can occur with low fuel pressure.
- Misfires: Low fuel pressure can lead to engine misfires, resulting in a rough running engine and potentially damaging the catalytic converter.
How to Fix P0087 GMC
- Check Fuel Pressure: Use a fuel pressure gauge to measure the actual fuel pressure in the fuel rail to confirm the low pressure condition.
- Inspect Fuel System Components: Check the fuel pump, fuel filter, fuel pressure regulator, fuel injectors, and fuel pressure sensor for any signs of damage or malfunction.
- Replace Faulty Components: Replace any faulty components identified during the inspection, such as a failing fuel pump, clogged fuel filter, faulty fuel pressure regulator, leaking fuel injector, or defective fuel pressure sensor.
- Clear Codes: After repairing the issue, clear the trouble codes using an OBD-II scanner to reset the check engine light and monitor the system for any further issues.
- Test Drive: Take the vehicle for a test drive to ensure that the repairs have resolved the low fuel pressure condition and that the engine is running smoothly.
Cost to Fix P0087 GMC
The cost of repairing a P0087 GMC trouble code can vary depending on the specific cause of the low fuel pressure and the cost of parts and labor. In general, repairing a fuel rail low pressure issue can range from $200 to $800, including parts and labor. However, the total cost may be higher if more than one component needs to be replaced or if additional diagnostics are required.
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Information for Specific GMC Models
- P0087 2014 GMC Sierra — Fuel Rail Low Pressure
- P0087 2015 GMC Sierra — Fuel Rail Low Pressure
- P0087 2016 GMC Sierra — Fuel Rail Low Pressure
- P0087 2017 GMC Sierra — Fuel Rail Low Pressure
- P0087 2018 GMC Sierra — Fuel Rail Low Pressure
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