P0148 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0148 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 P0148 code.

OBD II Fault Code

• OBD II P0148

OBD-II Code Decreased engine performance is defined as a Fuel Delivery Error

The engine control module (PCM) uses a Fuel Rail Pressure Sensor to determine the amount of fuel going to the injectors. If the PCM does not see that the commanded pressure is equal to the actual pressure, the PCM will set code P0148.

Decreased engine performance Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P0148 Code

• Air in the fuel system
• Fuel pump failure
• Leaking fuel lines

Common Repairs Needed for the P0148 Code

• Fuel Injector Replacement (Diesel)
• Diesel Injection Pump Replacement