P0190 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0190 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0190 code.

What Does P0190 Code Mean?

OBD-II Code P0190 is defined as a Fuel Rail Pressure Sensor "A" Circuit

The engine control module (PCM) uses a fuel rail pressure sensor to know how much pressure is going to the fuel injectors. This is so the PCM can effectively control the amount of fuel going through the fuel injectors to maintain desired power and fuel efficiency. If the PCM detects an erratic signal from the fuel pressure sensor, it will set code P0190.

P0190 Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P0190 Code

• Powertrain Control Module (PCM) failure
• Pressure sensor failure
• Wiring issue

Common Repairs Needed for the P0190 Code

• Fuel Pump Replacement