AutoCodes - Lexus - P0191 LEXUS

P0191 LEXUS Code - Fuel Rail Pressure Sensor Circuit Range / Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0191 LEXUS code possible causes

  • Faulty Fuel Rail Pressure Sensor
  • Fuel Rail Pressure Sensor harness is open or shorted
  • Fuel Rail Pressure Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

|How do I fix the P0191 LEXUS code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the P0191 LEXUS code

Labor: 1.0

The cost of diagnosing the P0191 LEXUS code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0191 LEXUS code possible symptoms?

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

|P0191 LEXUS code description

With a cold engine, the internal pressure of the common rail is regulated by the Pressure Control Valve of the common rail assembly. With a warm engine, it is regulated by the suction control valve of the fuel supply pump. When the engine is running with a light load, it is regulated by both the pressure control valve and the suction control valve. Based on signals from the Engine Control Module (ECM), the pressure control valve opens when sudden deceleration occurs to prevent the fuel pressure from becoming too high. The Diagnostic Trouble Code (DTC) will set when the Engine Control Module has determined that the fuel rail pressure is not to factory specifications.
OBDII Code P0191 Lexus - Fuel Rail Pressure Sensor Circuit Range / Performance -

|Need more information with the P0191 LEXUS code?

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|Need help with a P0191 LEXUS code?

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|P0191 LEXUS code comments

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Repair Importance Level: 3
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