Detroit Diesel Series 60 11.1L (1999-2000) Fault Codes List

The Detroit Diesel Series 60 11.1L engine was a trusted powertrain in commercial trucks and vocational vehicles. Built for fuel efficiency, durability, and performance, this engine served fleets and independent operators from 1999 to 2000. The Series 60 11.1L featured electronic engine management, which allowed for diagnostic fault codes to be read through onboard systems, streamlining troubleshooting and maintenance.

Whether you’re a fleet manager, diesel technician, or truck owner, having access to fault codes, wiring diagrams, and repair manuals is essential for diagnosing and repairing issues quickly.

Series 60 11.1L Overview

• Displacement: 11.1L
• Horsepower Range: 330-365 HP
• Torque: Up to 1,250 lb-ft
• Fuel System: Electronic Unit Injection (EUI)
• Emissions Control: Pre-EGR (No Aftertreatment Systems)
• Applications: Freightliner, Western Star, and various vocational trucks

🔗 Get FREE Fault Code Information for all makes and models in Diesel Repair → Diesel Repair

Detroit Diesel Series 60 11.1L (1999-2000) Fault Codes

Below is a comprehensive list of fault codes you may encounter on a Detroit Diesel Series 60 11.1L, which covers model year 1999-2000. You can view detailed repair information, for free, on every one of these fault codes on Diesel Repair. Diesel Repair also includes other information such as fault code to part number, wiring diagrams, parts cross reference, remove and replace instructions, labor time guides, and everything else you need to properly troubleshoot your Detroit Diesel Series 60 11.1L engine.

Fault	PID	FMI	Title
11	187	4	Variable Speed Governor (VSG) Input Low
12	187	3	Variable Speed Governor (VSG) Input High
13	111	4	Coolant Level Circuit Low
13	111	6	ACLS Failed Low
14	110	3	Coolant Temperature Circuit High
14	175	3	Oil Temperature Circuit High
15	110	4	Coolant Temperature Circuit Low
15	175	4	Oil Temperature Circuit Low
16	111	3	Coolant Level Circuit High
16	111	5	ACLS Circuit High
17	354	3	Relative Humidity Sensor Circuit Failed High
17	51	3	Throttle Plate Input Voltage High
18	51	4	Throttle Plate Input Voltage Low
18	354	4	Relative Humidity Sensor Circuit Failed Low
21	91	3	Throttle Position Sensor (TPS) Circuit High
22	91	4	Throttle Position Sensor (TPS) Circuit Low
23	174	3	Fuel Temperature Circuit High
24	174	4	Fuel Temperature Circuit Low
25			DDEC System – No Active or Inactive Codes
26		11	Auxiliary Shutdown No. 1 Active
26	61	11	Auxiliary Shutdown No. 2 Active
27	172	3	Air Temperature Circuit High
28	172	4	Air Temperature Circuit Low
29	351	4	Turbo Compressor Inlet (TCI) Low Voltage
29	404	4	Turbo Compressor Outlet (TCO) Low Voltage
31		4	EGR Solenoid Power Open or Short to Ground
31		4	PWM Valve Power Open or Short to Ground
31		3	EGR Solenoid Power Open or Short to Ground
31		3	PWM Valve Power Open or Short to Ground
32		3	SEL Short to Battery
32		3	CEL Short to Battery
32		4	SEL Open Circuit
32		4	CEL Open Circuit
33	102	3	Turbo Boost Sensor (TBS) Circuit High
34	102	4	Turbo Boost Sensor (TBS) Circuit Low
35	100	3	Oil Pressure Circuit High
36	100	4	Oil Pressure Circuit Low
37	95	3	Fuel Restriction Input Voltage High
37	94	3	Fuel Pressure Input Voltage High
38	95	4	Fuel Pressure Restriction (FRS) Input Voltage Low
38	94	4	Fuel Pressure Sensor (FPS) Input Voltage Low
39		7	EGR Valve Not Responding (Temporary Code)
39		7	VNT Vanes Not Responding – EGR
39		11	VNT Vanes at Max – Jake
39		14	EGR Flow Too Low
39		2	EGR Leak – Boost Power
39		12	VNT Vanes Not Responding – Boost Jake
39		12	EGR Leak – Boost Jake
39		7	VNT Vanes Not Responding (Temporary Code)
39		2	VNT Vanes Not Responding – Boost Power
39		7	EGR Valve Not Responding
41	21		Too Many Synchronous Reference Sensor (SRS) Pulses
42	21	1	Too Few Synchronous Reference Sensor (SRS) Pulses
43	111	1	Coolant Level Low
44	175		Oil Temperature High
44	110		Coolant Temperature High
45	100	1	Oil Pressure Low
46	168	1	Battery Supply Voltage Below Recommended Operating Range
47	106		Air Inlet Pressure High (Gas Fueled Engines)
47	94		Fuel Pressure High
47	102		Turbo Boost Pressure High (Diesel Fueled Engines)
48	411	1	EGR Delta Pressure Low (35.00 ECM Software and Higher)
48	94	1	Fuel Pressure Low
48	106	1	Air Inlet Pressure Low (Gas Fueled Engines)
48	154	1	EGR Temperature Low (32.xx ECM Software and Lower)
48	351	1	TCI Temperature Below Range
48	412	1	EGR Temperature Low (35.00 ECM Software and Higher)
48	155	1	EGR Delta Pressure Low (32.xx ECM Software and Lower)
48	404	1	TCO Temperature Below Range
49	351		TCI Temperature Above Range
49	404		TCO Temperature Above Range
49	404	14	TCO De-Rate
51	404	3	TCO Temperature Failed High
51	351	3	TCI Temperature Failed High
52		12	Analog to Digital (A/D) Converter Device – Malfunctioned
53		2	Non-Volatile Checksum Incorrect
53		12	EEPROM Write Fail
54	84	12	VSS Fault
55	84	12	J1939 Data Link Fault
55		12	ECM Fault
55		14	Missing Other ECU
55	86	14	J1939 Data Link Fault
56		12	J1587 Data Link Fault
57		12	J1922 Data Link Fault
58	92		Torque Overload
61			Injector 5 Response Long
61			Injector 4 Response Long
61			Injector 6 Response Long
61			Injector 3 Response Long
61			Injector 1 Response Long
61			Injector 2 Response Long
62		3	Auxiliary Output No. 6 – Short to Battery
62		4	Auxiliary Output No. 8 – Open Circuit
62		4	Auxiliary Output No. 6 – Open Circuit
62		3	Auxiliary Output No. 2 – Short to Battery
62		3	Auxiliary Output No. 1 – Short to Battery
62		3	Auxiliary Output No. 5 – Short to Battery
62		4	Auxiliary Output No. 2 – Open Circuit
62		3	Auxiliary Output No. 7 – Short to Battery
62		4	Auxiliary Output No. 1 – Open Circuit
62		4	Auxiliary Output No. 7 – Open Circuit
62		3	Auxiliary Output No. 8 – Short to Battery
62		4	Auxiliary Output No. 1 – Open Circuit
63		3	PWM No. 3 – Short to Battery
63		4	PWM No. 3 – Open Circuit
63		4	PWM No. 4 – Open Circuit
63		3	PWM No. 1 – Short to Battery
63		4	PWM No. 2 – Open Circuit
63		3	PWM No. 4 – Short to Battery
63		3	PWM No. 2 – Short to Battery
63		4	PWM No. 1 – Open Circuit
64	103		Turbo Overspeed
64	103	8	Turbo Speed Sensor Input Failure
65	107	3	Air Filter Sensor Voltage High (Diesel Engines)
65	51	7	Throttle Plate Not Responding
65	51	1	Throttle Plate Below Normal Range (Gas Engines)
65	107	4	Air Filter Sensor Voltage Low (Diesel Engines)
65	51		Throttle Plate Above Normal Range (Gas Engines)
66		7	Knock Level Torque Reduction (Gas Engines)
66	99	3	Oil Filter Sensor Input Voltage High (Diesel Engines)
66		4	Knock Sensor Input Voltage Low (Gas Engines)
66		3	Knock Sensor Input Voltage High (Gas Engines)
66			Knock Level Above Normal Range (Gas Engines)
66	99	4	Oil Filter Sensor Input Voltage Low (Diesel Engines)
67	106	4	Air Inlet Pressure Sensor Input Voltage Low (Gas Engines)
67	109	4	Coolant Pressure Sensor Input Voltage Low (Diesel Engines)
67	109	3	Coolant Pressure Sensor Input Voltage High (Diesel Engines)
67	106	3	Air Inlet Pressure Sensor Input Voltage High (Gas Engines)
68		6	Idle Validation Switch (IVS) – Short to Ground
68		5	Idle Validation Switch (IVS) – Open Circuit
71		1	Injector No. 4 – Short Response Time
71		1	Injector No. 5 – Short Response Time
71		1	Injector No. 2 – Short Response Time
71		1	Injector No. 1 – Short Response Time
71		1	Injector No. 6 – Short Response Time
71		1	Injector No. 3 – Short Response Time
72	84	11	Overspeed without Fuel Limit Has Been Exceeded
72	84		Overspeed with Fuel Limit Has Been Exceeded
73		11	Neutral / In-Gear Switch Fault (Diesel Engines)
73		4	Gas Valve Position – Input Voltage Low (Gas Engines)
73			Gas Valve Position – Above Normal Range (Gas Engines)
73			Air Filter Restriction High (Diesel Engines)
73		2	Shift Knob Erratic, Intermittent or Incorrect (Diesel Engines)
73		1	Gas Valve Position – Below Normal Range (Gas Engines)
73		3	Gas Valve Position – Input voltage High (Gas Engines)
73		14	Stuck In Gear Detected (Diesel Engines)
73		3	Shift Knob Voltage Above Normal or Shorted High (Diesel Engines)
73		4	Shift Knob Voltage Below Normal or Shorted Low (Diesel Engines)
74	70	4	Optimized Idle Safety Loop
75	168		Battery Voltage High
76	121		Engine Overspeed with Engine Brake
77	105	1	Inlet Manifold Temperature Below Range
77	354	1	Relative Humidity Below Range
77	354		Relative Humidity Above Range
77	252	13	Clock Module Failure
77	252	10	Clock Module Abnormal Rate of Change
77	251	10	Clock Module Abnormal Rate of Change
77	174	1	TCO Temperature Below Range (Temporary Code)
77	174		TCO Temperature Above Range (Temporary Code)
77	172	1	Air Inlet Temperature Below Range
77	171	1	Ambient Air Temperature Below Range
77	171		Ambient Air Temperature Above Range
77	110	1	Coolant Temperature Below Range
77	108	1	Barometric Pressure Below Range
77	108		Barometric Pressure Above Range
77	107	1	Air Filter Differential Pressure Below Range
77	81	1	Exhaust Back Pressure Below Range
77	111		Coolant Level Above Range
77	109		Coolant Pressure Above Range
77	251	13	Clock Module Failure
77	222	14	Anti-Theft Fault Present
77	81	12	Exhaust Back Pressure at Ramp Down Threshold
77	73	1	Fire Pump Pressure Below Range
77	81		Exhaust Back Pressure Above Range
77	81	3	Exhaust Back Pressure Failed High
77	81	4	Exhaust Back Pressure Failed Low
77	95	1	Fuel Filter Differential Pressure Below Range
77	99	1	Oil Filter Differential Below Range
77	100		Engine Oil Pressure Above Range
77	102	1	Turbo Boost Pressure Below Range
77	174		Fuel Temperature Above Range
77	174	1	Fuel Temperature Below Range
77	175	1	Engine Oil Temperature Below Range
78	86	14	Cruise Control / Adaptive Cruise Control (aka Smart Cruise)
81	173	3	Exhaust Gas Temperature Circuit Failed High
81	412	3	EGR Temperature Circuit Failed High
81	98	3	Oil Level Sensor Input Voltage High
81	411	3	EGR Delta P Circuit Failed High
81	154	3	EGR Temperature Circuit Failed High
81	155	3	EGR Delta P Circuit Failed High
82		4	EGR Temperature Failed Low
82		4	EGR Temperature Failed Low
82	98	4	Oil Level Sensor Input Voltage Low
82	173	4	Exhaust Gas Temperature Circuit Failed Low
82		4	EGR Delta Pressure Failed Low
82		4	EGR Delta Pressure Failed Low
83	154		EGR Temperature High
83	173		Exhaust Temperature High
83			EGR Delta Pressure High
83			EGR Delta Pressure High
83	412		EGR Temperature High
83	73		External Pump Pressure High
84	98	1	Oil Level Low
85	190		Engine Overspeed
86	73	3	PGS Sensor High
87	73	4	PGS Sensor Low
88			Coolant Pressure Low
89	95		Fuel Inlet Restriction High
89	111	12	ACLS Fault
90	168	1	Engine Sensor Harness
91	168	1	Vehicle Harness

For expert assistance, up-to-date repair insights, and a wealth of troubleshooting resources, explore Diesel Repair. Stay ahead of maintenance issues and keep your Series 60 11.1L engine running smoothly for the long haul.