P0087 Hyundai Code - Fuel Rail/System Pressure Too Low
Quick Answer
This fault code is stored in the Engine Control Module (ECM) when the fuel pressure is not as expected. Common causes include Faulty fuel pressure sensor, Faulty fuel pump, Fuel pressure sensor harness is open or shorted. 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 Hyundai indicates Fuel Rail/System Pressure Too Low.
- Common causes
- Common causes include Faulty fuel pressure sensor, Faulty fuel pump, Fuel pressure sensor harness is open or shorted.
- 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.
Code P0087 Hyundai Description
A number of issues may cause this fault code to be set such as a faulty fuel rail pressure sensor, a mechanical fault with the inlet metering valve or rail pressure control solenoid could cause the valve to become stuck. An electrical fault such as an open circuit in the inlet metering valve or fuel pressure control solenoid on a system with a normally closed valve will also cause this situation. A short circuit on the control wire of a normally open inlet metering valve will also cause this fault.
A fault in the fuel injector return system causes the fuel pressure to be lower than expected. This causes fuel from the high-pressure circuit to be leaked back to the low-pressure circuit. A faulty maximum pressure relief valve will also cause this situation.
The high-pressure pump should also be tested to ensure it is capable of delivering the required volume of fuel.
What are the Possible Causes of the DTC P0087 Hyundai?
- Faulty fuel pressure sensor
- Faulty fuel pump
- Fuel pressure sensor harness is open or shorted
- Fuel pressure sensor electrical circuit poor connection
- Blocked fuel filter
- Fuel line restricted
- Faulty fuel pressure regulator
How to Fix the DTC P0087 Hyundai?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0087 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0087 Hyundai Code
1. What are the common symptoms of OBDII code P0087 on a Hyundai related to fuel rail/system pressure too low?
- Common symptoms include engine misfires, loss of power, rough idle, hesitation during acceleration, and potentially stalling.
2. What are some possible causes of OBDII code P0087 indicating low fuel rail/system pressure in a Hyundai?
- The code can be triggered by issues such as a faulty fuel pressure regulator, clogged fuel filter, weak fuel pump, fuel line leaks, or a malfunctioning fuel pressure sensor.
3. How can I diagnose the underlying issue causing OBDII code P0087 on my Hyundai?
- To diagnose the problem, it is recommended to perform a fuel pressure test, inspect the fuel lines for leaks, check the fuel pressure sensor, and scan for other related trouble codes.
4. Can a dirty or clogged fuel filter cause OBDII code P0087 on a Hyundai?
- Yes, a dirty or clogged fuel filter can restrict fuel flow and lead to insufficient fuel pressure, triggering the P0087 code.
5. Is it safe to continue driving my Hyundai with OBDII code P0087 indicating low fuel rail pressure?
- It is not recommended to drive the vehicle with this code present, as it can lead to engine performance issues and potential damage if left unresolved.
6. How can I repair OBDII code P0087 related to low fuel rail pressure on my Hyundai?
- Repair options may include replacing the fuel pressure regulator, cleaning or replacing the fuel filter, checking and repairing any fuel line leaks, or addressing issues with the fuel pump.
7. Can a faulty fuel pressure sensor trigger OBDII code P0087 in a Hyundai?
- Yes, a malfunctioning fuel pressure sensor can provide inaccurate readings to the engine control module, leading to the detection of low fuel rail/system pressure and the P0087 trouble code.
8. Will resetting the OBDII code P0087 on my Hyundai make the issue go away permanently?
- Simply resetting the code without addressing the underlying problem will not solve the issue causing low fuel rail pressure and the code will likely reappear once the problem persists.
9. How important is it to address OBDII code P0087 indicating low fuel rail pressure promptly on a Hyundai?
- It is crucial to address the issue promptly, as insufficient fuel pressure can cause engine performance issues, reduce fuel efficiency, and potentially lead to more severe problems if left unresolved.
10. Can a DIY enthusiast with basic automotive knowledge attempt to fix OBDII code P0087 on a Hyundai?
- Depending on the specific cause of the code, some repairs related to low fuel rail pressure may be possible for a skilled DIY enthusiast, but more complex issues may require professional diagnosis and repair.
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