P0087 Audi 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 Audi 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 Audi 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 Audi?
- 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 Audi?
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 Audi 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 Audi Code
1. What are the common symptoms of OBDII code P0087 in an Audi related to low fuel rail/system pressure?
Symptoms may include rough idling, engine hesitation during acceleration, loss of power, and potential stalling.
2. What are some possible causes of OBDII code P0087 in an Audi?
Causes can include a faulty fuel pump, clogged fuel filter, fuel pressure regulator issues, a vacuum leak, or a malfunctioning fuel pressure sensor.
3. How can I diagnose the root cause of OBDII code P0087 in my Audi?
A diagnostic scan tool can help pinpoint the issue by monitoring fuel pressure readings, checking for vacuum leaks, and testing the fuel system components for proper functionality.
4. Can a dirty fuel injector trigger OBDII code P0087 in an Audi?
While less common, a dirty or clogged fuel injector can lead to reduced fuel pressure and potentially trigger code P0087.
5. Is it safe to drive my Audi with OBDII code P0087 present?
It is not recommended to drive with this code as it can lead to engine performance issues and potential damage if not addressed promptly.
6. How can I repair OBDII code P0087 in my Audi?
Repair options may include replacing the fuel pump, cleaning or replacing the fuel filter, inspecting and fixing any vacuum leaks, or replacing the fuel pressure regulator or sensor as needed.
7. Can a bad fuel pressure sensor cause OBDII code P0087 in an Audi?
Yes, a malfunctioning fuel pressure sensor can send incorrect data to the engine control module, leading to low fuel pressure readings and triggering the code.
8. Will resetting the OBDII code P0087 in my Audi make it go away permanently?
Simply resetting the code without addressing the underlying issue will not resolve the problem, as the code is likely to return until the root cause is fixed.
9. Are there any preventive maintenance steps to avoid OBDII code P0087 in an Audi?
Regularly changing the fuel filter, using quality fuel, and following the manufacturer's recommended maintenance schedule can help prevent fuel system issues that trigger this code.
10. Can extreme weather conditions contribute to triggering OBDII code P0087 in an Audi?
Yes, extreme cold or hot weather can affect fuel system components and lead to pressure fluctuations that may trigger code P0087.
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