What is the P0148 engine fault? What is the P0148 fuel delivery malfunction error code? …..Causes and symptoms of P0148 engine fault code
P0148, “Fuel delivery Malfunction”, is a generic code the PCM generates when it happens. This applies to OBD II equipped vehicles (Dodge Ram, Ford, Ram, Ford GMC, Chevrolet VW, Audi, VW, etc.). The steps to repair a vehicle may vary depending on its make and model. When the fuel delivery system is not working properly, the PCM will generate error code P0148.
Why does the P0148 error code occur?
The fuel priming pumps generates the high-pressure required for injectors. The Fuel Control Actuator is responsible for controlling the fuel pressure. This is electronically controlled by the PCM or fuel injection control modules. The PCM monitors fuel pressure signals (often located near the FCA) and monitors it while the engine is running. The PCM will emit error code P0148 and light the check engine lamp if the fuel pressure falls outside the range.
What are the symptoms of P0148 Fault code?
A fuel delivery error can lead to engine damage and reduced performance. The P0148 code should always be considered serious, especially if the fuel smell is strong. It should also be addressed immediately.
- – High fuel consumption
- – Low engine performance
- – Excessive black tar from exhaust
- – Strong fuel smell
Causes of the P0148 Fault code
- – Fuel system leakage at high pressure
- – Defective fuel pressure sensor
- – Defective fuel control actuator (FCA)
- – Damaged or defective fuel pump
- Problems with connector, cable and connection in the shorted system
- – Defective stepped relief Valve
- Fuel line damage or clogging
- – Fuel system air
- Leaky fuel injectors
- – A defective power relay for the PCM
- – Software or PCM problems
Note: This code may also be activated by previous fault codes. Other fault codes must first be identified and corrected.
