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P1187 Hyundai Code - Fuel Pressure Monitoring - Regulator Valve Stick

- Code Popularity: 24,249 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1187 Hyundai?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Fuel Pressure Regulator (FPR)
  • Faulty Rail Pressure Sensor (RPS)
  • Engine Control Module (ECM)
⚠ Does your Hyundai have Safety Recalls? → Check here

How to Fix the DTC P1187 Hyundai?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P1187 Hyundai Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1187 Hyundai code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1187 Hyundai Description

Fuel pressure monitoring is used to detect the troubles and the fuel leakage in high pressure system.
The Engine Control Module (ECM) determines the rail pressure value as a function of the engine’s operating conditions and controls the fuel pressure regulator to ensure that the rail pressure reaches the required value.
Fuel pressure in the fuel line including the pumps and injector are continuously monitored during engine running.
If the rail pressure is excessive, the fuel pressure regulator opens and a portion of the fuel is returned from the rail to the fuel tank via a collector line. If the rail pressure is too low, the fuel pressure regulator closes.
The fuel pressure regulator closes. the fuel pressure regulator is installed in the tail end of high pressure accumulator.
In case of the insufficient fuel supply in the fuel line, the engine symptoms will occur a shut down and a starting impossible.
If the fuel pressure monitoring in engine fuel pressure line generates threshold value, the ECM judged this as a fault and the P1187 code is set.

OBDII Code P1187 Hyundai - Fuel Pressure Monitoring - Regulator Valve Stick - AutoCodes.com
P1187 Hyundai Code - Fuel Pressure Monitoring - Regulator Valve Stick

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Code P1187 Hyundai comments

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