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
Detroit Diesel Parts and Service
- These codes are for your reference only. Detroit Diesel Series 60 Engines only
- Please note: Codes 43, 44, and 45 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 nearest Detroit Diesel service center.
| 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 |