DDEC III/IV Single ECM Troubleshooting – Section 67.1 Description of Flash Code 67

Section 67.1
Description of Flash Code 67

For diesel engines, Flash Code 67 indicates that the coolant pressure input voltage to the ECM has exceeded or dropped below the allowed range.‪

This code is not covered in this manual (for diesel engines). If changes occur, notification will be sent from DDC.‪

For gas engines, Flash Code 67 indicates that the input voltage to the ECM from the air inlet pressure sensor has dropped below 5%, or gone above 95% of the sensor supply voltage.‪