What is CID 248:
CID 248 refers to a problem with the vehicle’s fuel system, specifically the fuel pressure sensor. The ECM detects a malfunction in the fuel system’s pressure regulation, which can lead to improper fuel delivery, engine misfires, or poor acceleration.
Why This Happens:
- Faulty fuel pressure sensor.
- Shorted or damaged wiring in the sensor circuit.
- Loose or corroded sensor connectors.
- Low fuel pressure due to malfunctioning fuel pump.
- ECM misinterpreting sensor data.
How to Fix It:
- Inspect the fuel pressure sensor and wiring for visible damage or malfunction.
- Test the sensor’s voltage and resistance to verify it’s functioning correctly.
- Check connectors for tightness and cleanliness.
- Replace the faulty fuel pressure sensor if necessary.
- Inspect the fuel system for low pressure or malfunctioning fuel pumps.
How to Avoid It Before It Happens:
- Regularly inspect the fuel pressure sensor and wiring.
- Perform routine fuel system maintenance.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor fuel presure.
- Clue’s fuel management services track fuel pressure systems to detect issues before they affect engine operation.
