Description of Flash Code 23
Flash Code 23 indicates that the engine Fuel Temperature Sensor (FTS), see Figure "Fuel Temperature Sensor" , input to the ECM has exceeded 95% (normally >4.75 volts) of the sensor supply voltage.
Note: This code will only be logged during warm engine operation.
This diagnostic condition is typically:
- Open sensor signal circuit
- Open sensor circuit return
- Sensor signal circuit is shorted to the sensor +5 volt supply
|DDEC III/IV Single ECM Troubleshooting Guide - 6SE497|
|Generated on 10-13-2008|