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Detroit Codes

Fault Codes for Detroit Diesel Series 60 Engines

Have you ever wondered what those engine codes mean when you have a check-engine light on in your truck?

Well, wonder no more because the following codes are supplied as a trouble-shooting guide for mechanics. These codes are not for the faint-of-heart, and you should always have your truck serviced by a qualified professional

These codes are for your reference only. Detroit Diesel Series 60 Engines only
Please note: Codes 43, 44,45,51 and 53 are critical codes and if they are shown, the Stop Engine Light will come on which causes the engine protections to engage and your engine may shut down.
All other codes will cause the Check Engine Light to come on which will not engage the engine protections and will allow the engine to continue running
If any of these codes are shown, please contact the Ecudiesel service center at (954) 895-2402

Flash Code	Description
11	VSG Sensor Input Voltage Low
12	VSG Sensor Input Voltage High
13	Coolant level Sensor (CLS) Voltage Low
14	Oil or Coolant Temperature Sensor (OTS or CTS) Voltage High
15	Oil or Coolant Temperature Sensor (OTS or CTS) Voltage Low
16	Coolant Level Sensor (CLS) Voltage High
17	Bypass or Throttle, Valve Position Sensor Input Voltage High
18	Bypass or Throttle, Valve Position Sensor Input Voltage Low
21	Throttle Position Sensor (TPS) Voltage High
22	Throttle Position Sensor (TPS) Voltage Low
23	Fuel Temperature Sensor (FTS) Voltage High
24	Fuel Temperature Sensor (FTS) Voltage Low
25	No Codes
26	Auxiliary Engine Shutdown #1 or #2 Input Active
27	Air Inlet or Intake Air, Temperature Sensor Input Volage High
28	Air Inlet or Intake Air, Temperature Sensor Input Volage Low
31	Engine Brake Output Open Circuit or Short to Ground
32	CEL or SEL Short to Battery or Open Circuit
33	Turbo Boost Sensor (TBS) Voltage High
34	Turbo Boost Sensor (TBS) Voltage Low
35	Oil Pressure Sensor (OPS) Voltage High
36	Oil Pressure Sensor (OPS) Voltage Low
37	Fuel Pressure Sensor (FPS) Voltage High
38	Fuel Pressure Sensor (FPS) Voltage Low
41	Timing Reference Sensor (TRS)
42	Synchronous Reference Sensor (SRS)
43	Low Coolant
44	Oil or Coolant High Temperature
45	Low Oil Pressure
46	Low Battery Voltage
47	Fuel, Air Inlet, or Turbo Boost Pressure High
48	Fuel or Air Inlet Pressure Low
51	EEPROM Error
52	ECM - Analog to Digital Failure
53	EEPROM Non-Volatile Memory Failure
54	Vehicle Speed Sensor Fault
55	J1939 Data Link Failure
56	J1587 Data Link Failure
57	J1922 Data Link Failure
61	Injector Response Time Too Long
62	Auxiliary Output Short ot Battery or Open Circuit or Mech Fault
63	PWM Drive Short to Battery or Open Circuit
64	Turbo Speed Sensor Input Fault
65	Throttle Valve Position Input Fault
66	Engine Knock Sensor Input Fault
67	Coolant or Air Inlet Pressure Sensor Input Voltage High
68	Idle Validation Switch Open Circuit or Short to Ground
71	Injector Response Time Too Short
72	Vehicle Overspeed
73	Gas Valve Position Input Fault or ESS Fault
74	Optimized Idle Safety Look Short to Ground
75	ECM Battery Voltage High
76	Engine Overspeed with Engine Brake
77	Fuel Temperature High
81	Dual Fuel BOI or Exhaust Temperature Voltage High
82	Dual Fuel BOI or Exhaust Temperature Voltage Low
83	Exhaust Temperature or External Pump Pressure High
85	Engine Overspeed
86	External Pump Pressure Sensor Input Voltage High
87	External Pump Pressure Sensor Input Voltage Low