1600
What This Code Means
No RPM pulses sensed for 75 consecutive milliseconds while starter active; Cranking faults to RPM sensor loss; Starter engaged, no tooth pulses for 75 ms; While running, no tooth pulses for 75 consecutive milliseconds; Unit Overloaded or Fuel System issue; Low Fuel Pressure; Throttle Stuck Closed/near Closed; No pulse during cranking (RPM sensor); No tooth pulses sensed for 75 consecutive milliseconds while starter active; No pulse during running (RPM sensor); Loss of RPM sensor signal while running; Missing pulses during cranking (RPM sensor); Missing pulses during running (RPM sensor); Underspeed condition detected (<83.3% speed (60 Hz) or <66.6% speed (50 Hz) for 30 seconds); Unit overloaded slowing engine speed; Underspeed condition detected; Low fuel pressure detected for 1200 ms before underspeed; Throttle stuck closed or near closed; Limiting fuel to the engine, slowing it down; Overvoltage condition; Generator running at higher speed (25% over nominal rpm); High Temperature; Co
Possible Causes
- •Air Flow Impeded / Flow Issue
- •Fuel System issue
- •Fuel supply low
- •Highly inductive loads
- •Low battery
- •Low fuel pressure detected for 1200 ms before underspeed condition detected.
- •Low fuel pressure starves the engine, slowing it.
- •Low fuel pressure starving the engine
- •Overspeed generator
- •RPM sensor alignment
- •RPM sensor alignment issue
- •RPM sensor issue
- •RPM sensor loss
- •Starter circuit issue
- •Stuck closed must be detected for one second with underspeed to set E-Code.
- •The throttle is stuck closed or stuck near closed limiting the fuel to the engine, slowing it down.
- •Throttle control problem
- •Throttle stuck closed or near closed
- •Unit Overloaded
- •Unit is overloaded
- •Unit is overloaded slowing engine speed
- •Unit overloaded
- •failed motor
- •low battery
Suggested Actions
- 1Check coolant sensor circuit for proper operation.
- 2Check fuel supply and settings
- 3Check the inlet/outlet for debris.
- 4Perform Problem 3
- 5Perform Problem 3 troubleshooting procedure
- 6Perform Test 12
- 7Perform Test 50
- 8Perform Test 50 or Test 12
- 9Problem 3
- 10Problem 31
- 11Refer to Problem 3
- 12Refer to Problem 31 for RPM Sensor troubleshooting
- 13Test 12
- 14Test 50
- 15Test 68
- 16Troubleshoot Problem 3
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