1438

UnclassifiedSpeed

What This Code Means

Engine failed to crank after the generator control received a start signal; Generator set output current has exceeded the warning limit threshold for greater than the fixed time delay; Generator set output current has exceeded the shutdown limit threshold for greater than the fixed time delay; Engine RPM has decreased to zero while not in run at rated mode; Engine RPM has decreased to zero, while not in run at rated mode

Possible Causes

  • Dead or weak battery
  • Failed starter
  • Generator set overload
  • Incorrect calibration in the PowerCommand control

Suggested Actions

  1. 1Verify battery voltage is at least 12 VDC (or 24 VDC if applicable)
  2. 2Charge or replace the battery as necessary
  3. 3Press the Reset/Fault acknowledge button on the display
  4. 4Attempt to start the generator and test for B+ at the starter supply lug
  5. 5If B+ is present at the starter supply lug, the starter could be defective
  6. 6Reduce the generator set load by powering off unnecessary electrical loads
  7. 7Check if starter is defective if B+ is present at the starter supply lug

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 1438 on your specific Cummins unit — cited to the OEM manual, not a forum guess.

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