Perkins 1104D-E44T Fault Codes

Troubleshooting · Updated 2026-07-01

The Perkins 1104D-E44T is a reliable generator known for its robust performance. Its fault-code system helps identify specific problems, ensuring efficient maintenance.

How to read Perkins 1104D-E44T fault codes

Owners should regularly monitor the generator's status using the fault-code display. Clearing codes after addressing issues can help prevent false alarms and ensure smooth operation.

Perkins 1104D-E44T fault code list

These 33 codes are compiled from the Perkins service documentation for this model.

Code	Symptom	Likely cause	What to do
111	No. 1 Injector Fault	—	Schedule a Service.
112	No. 2 Injector Fault	—	Schedule a Service.
113	No. 3 Injector Fault	—	Schedule a Service.
114	No. 4 Injector Fault	—	Schedule a Service.
133	Intake Manifold Air Temperature sensor fault	—	Schedule a Service.
141	Primary Engine Speed/Timing Sensor Fault	—	Schedule a Service.
142	Secondary Engine Speed/Timing Sensor Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
143	Engine Timing Calibration Fault	—	Schedule a Service.
144	Engine Operation Mode Selector Switch Fault	—	Schedule a Service.
151	Air Inlet Pressure Sensor Fault	—	Schedule a Service.
154	Throttle Position Sensor Fault	—	Schedule a Service.
155	Secondary Throttle Position sensor Fault	—	Schedule a Service.
157	Engine Oil Pressure Sensor Fault	—	Schedule a Service.
159	Fuel Rail Pressure Sensor Fault	—	Schedule a Service.
162	Fuel Rail Pressure Valve Solenoid Fault	—	Schedule a Service.
168	Engine Coolant Temperature Sensor Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
169	Low Engine Coolant	—	No specific remedy provided, but it is suggested to investigate the fault.
177	Turbo Wastegate Actuator Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
185	High Exhaust Temperature	—	No specific remedy provided, but it is suggested to investigate the fault.
197	Intake Manifold Boost Pressure Fault	—	Schedule a Service.
199	Glow Plug Start Relay Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
233	Ether Injection Control Solenoid	—	Schedule a Service.
245	Idle Validation Switch 1 Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
246	Idle Validation Switch 2 Fault	—	No specific remedy provided, but it is suggested to investigate the fault.
253	Engine Fuel Supply Pump Relay Fault	—	Schedule a Service.
415	Software Mismatch	—	No specific remedy provided, but it is suggested to investigate the fault.
511	ECM Power Supply Voltage Fault	—	—
514	SAE J1939 Data Link Fault	—	—
516	5 Volt Sensor DC Power Supply Fault	—	—
517	8 Volt Sensor DC Power Supply Fault	—	—
527	Customer/System Parameter Fault	—	—
551	No Detected Faults have occurred since the ignition keyswitch has been turned to the ON position	—	Flash Code 551 indicates no faults. No further action required.
X	Warning lamps are installed.	—	Refer to this table. For installations that have electronic displays, refer to the OEM for information.

When to call a professional

If unfamiliar with troubleshooting or if multiple critical faults persist, stop and consult a qualified technician.

Fault codes and specifications here are compiled from manufacturer service documents. See the full Perkins 1104D-E44T specifications, engine and parts page for maintenance intervals, filters and cross-references. Always verify against the official manual for your unit.