What is MID 137:
MID 137 refers to a problem with the Fuel Rail Pressure Sensor Circuit. The ECM detects an abnormal signal from the fuel rail pressure sensor, which can lead to incorrect fuel pressure readings, affecting fuel delivery to the engine.
Why This Happens:
- Faulty fuel rail pressure sensor.
- Shorted or damaged wiring in the sensor circuit.
- Loose or corroded sensor connectors.
- Low fuel pressure due to a malfunctioning fuel pump.
- ECM failure to interpret the sensor’s signal.
How to Fix It:
- Inspect the fuel rail pressure sensor and wiring for damage.
- Test the sensor’s voltage and resistance to verify it is functioning properly.
- Check connectors for cleanliness and tightness.
- Replace the faulty 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 rail pressure sensor and wiring.
- Keep connectors clean and corrosion-free.
- Perform routine diagnostic checks to monitor fuel pressure.
- Maintain proper fuel pressure and replace filters as needed.
- Clue’s Fuel Management services proactively monitor fuel pressure and help detect issues before they affect engine performance.
