Description of Flash Code 37
Flash Code 37 indicates that the engine Fuel Pressure Sensor (FPS) , see Figure "Fuel Pressure Sensor" , or Fuel Restriction Sensor (FRS),see Figure "Fuel Filter Restriction Sensor" , input to the ECM has exceeded 95% (normally > 4.75 volts) of the sensor supply voltage.
This diagnostic condition is typically:
- Open sensor return circuit
- Sensor signal circuit is shorted to the sensor +5 volt supply
Figure 1. Fuel Filter Restriction Sensor
|DDEC III/IV Single ECM Troubleshooting Guide - 6SE497|
|Generated on 10-13-2008|