Fault code P0192 – a step-by-step guide to diagnosing and fixing it

Error code P0192 is displayed and the check engine light is on - what does this mean?

DTC P0192 is triggered by the OBD/EOBD system when the fuel rail pressure sensor detects a signal that is too low. This fault code relates to the fuel supply system and can occur with different manufacturers, although the exact definition usually remains the same.

What causes can this error code have?

• Defective fuel rail pressure sensor
• Damaged wiring to the pressure sensor
• Corroded or loose plug connections
• Defective fuel pump
• Clogged fuel filter
• Low fuel level in the tank
• Defective fuel pressure regulator valve
• Short circuit in the sensor wiring
• Defective engine control unit (ECU)

What symptoms occur in parallel with fault code P0192?

• Starting problems: The vehicle is difficult to start or does not start at all. Uneven idling: The engine runs unevenly at idle and may stall. Loss of power: Significantly reduced engine power, especially under load. Jerking when accelerating: The vehicle jerks or stutters during acceleration. Increased fuel consumption: Unusually high consumption due to inefficient combustion. Engine stalling: The engine suddenly stops while driving.

How to fix the problem of trouble code P0192?

• Repairing trouble code P0192 requires a systematic approach to identify the cause.
• Replace the fuel rail pressure sensor if it is defective or provides incorrect values
• Repair or completely replace damaged cables between sensor and control unit
• Clean corroded plug connections and treat with contact spray or replace
• Replace the fuel pump if the fuel pressure is too low
• Replace clogged fuel filter with a new one
• Replace fuel pressure regulator valve if it is not working properly
• Replace defective engine control unit with a functional one or have it repaired
• Fill the fuel tank if the fuel level is too low