MBE 900 - Section 15.1 Troubleshooting the Electronic Engine Control System

Section 15.1
Troubleshooting the Electronic Engine Control System

Prior to performing troubleshooting tasks familiarize yourself with the found in the General Information Section.‪

When the electronic engine control system detects a fault, it broadcasts a message on the datalink. The dash display will show the code "128," indicating there is an engine fault.‪

Troubleshooting problems and solutions for the MBE 900 engine are listed in Table "Engine Troubleshooting Problems and Recommended Solutions (1 of 2)" and .‪

Problem ‪	Recommended Solution ‪
The Engine Will Not Crank‪	Listed in Table "Problem — The Engine will Not Crank" ‪
The Engine Turns Slowly‪	Listed in Table "Problem — The Engine Turns Over Slowly" ‪
The Engine Cranks, But Won't Start‪	Listed in Table "Problem — The Engine Cranks, But Won't Start" ‪
The Engine Starts Only After Cranking for a Long Time‪	Listed in Table "Problem — The Engine Starts Only After Cranking for a Long Time" ‪
The Engine Starts, But Dies‪	Listed in Table "Problem — The Engine Starts, But Dies" ‪
The Engine Fan Doesn't Work‪	Listed in Table "Problem — The Engine Fan Doesn't Work" ‪
The Engine Fan is Constantly On‪	Listed in Table "Problem — The Engine Fan is Constantly On" ‪
Fuel Consumption is Too High‪	Listed in Table "Problem — Fuel Consumption is Too High" ‪
The Engine Performs Poorly, Does Not Develop Full Power‪	Listed in Table "Problem — The Engine Performs Poorly, Does Not Develop Full Power" ‪
The Engine is in Emergency Running Mode (constant speed 1300 rpm)‪	Listed in Table "Problem — The Engine is in Emergency Running Mode (constant speed 1300 rpm)" ‪
The Coolant Temperature is Above Normal‪	Listed in Table "Problem — The Coolant Temperature is Above Normal" ‪
The Coolant Temperature is Below Normal‪	Listed in Table "Problem — The Coolant Temperature is Below Normal" ‪
The Cooling System is Losing Coolant‪	Listed in Table "Problem — The Cooling System is Losing Coolant" ‪
There is Coolant in the Engine Oil‪	Listed in Table "Problem — There is Coolant in the Engine Oil" ‪
There is Foam in the Engine Oil‪	Listed in Table "Problem — There is Foam in the Engine Oil" ‪
The Engine Oil Pressure is Low‪	Listed in Table "Problem — The Engine Oil Pressure is Low" ‪
The Engine Exhaust is White‪	Listed in Table "Problem — The Engine Exhaust is White" ‪
The Engine Exhaust is Black‪	Listed in Table "Problem — The Engine Exhaust is Black" ‪
The Engine Exhaust is Blue‪	Listed in Table "Problem — The Engine Exhaust is Blue" ‪
The Engine Brake Performance is Poor‪	Listed in Table "Problem — Engine Brake Performance is Poor" ‪
Cruise Control is Not Working‪	Listed in Table "Problem — Cruise Control is Not Working" ‪
The Fuel Pressure is Too High Downstream of the Fuel Filter‪	Listed in Table "Problem — Fuel Pressure is Too High Downstream of the Fuel Filter" ‪
Fuel Flows Out of the Fuel Return Line‪	Listed in Table "Problem — Fuel Flows Out of the Fuel Return Line" ‪

Table 1. Engine Troubleshooting Problems and Recommended Solutions (1 of 2)

Problem ‪	Recommended Solution ‪
Fuel Flow Quantity is Too Low at the Overflow Valve and Too High at the Filter‪	Listed in Table "Problem — Fuel Flow Quantity is Too Low at the Overflow Valve and Too High at the Filter" ‪
Fuel Flow Quantity is Too Low at the Overflow Valve and Within Range at the Filter‪	Listed in Table "Problem — Fuel Flow Quantity is Too Low at the Overflow Valve and Within Range at the Filter" ‪
The Fuel Inlet Pressure is Too Low‪	Listed in Table "Problem — The Fuel Inlet Pressure is Too Low" ‪
The Fuel Inlet Pressure is Too High‪	Listed in Table "Problem — The Fuel Inlet Pressure is Too High" ‪
The Low Pressure Fuel System is Leaking‪	Listed in Table "Problem — The Low-Pressure Fuel System is Leaking" ‪

Table 2. Engine Troubleshooting Problems and Recommended Solutions (2 of 2)

Note: To read the complete fault code, use a minidiag2 or Diagnostic Data Reader (DDR).

Section 15.1.1
Engine Fault Codes

The engine fault codes and their causes are listed in Table "DDEC-VCU and DDEC-ECU Fault Codes (1 of 7)" :‪

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
45‪	45‪	—‪	3‪	Grid Heater Open Circuit‪
45‪	45‪	—‪	4‪	Grid Heater Shortened to Ground‪
45‪	45‪	—‪	14‪	Grid Heater Special Instructions‪
45‪	45‪	—‪	12‪	Grid Heater Defect‪
84‪	84‪	—‪	1‪	Vehicle Speed Sensor Anti-tamper Fault 1‪
84‪	84‪	—‪	5‪	Vehicle Speed Sensor Anti-tamper Fault 2‪
84‪	84‪	—‪	0‪	Vehicle Speed Sensor Data Valid but Above Normal Range‪
84‪	84‪	—‪	3‪	Vehicle Speed Sensor Open Circuit‪
84‪	84‪	—‪	4‪	Vehicle Speed Sensor Short to Ground‪
84‪	84‪	—‪	2‪	Vehicle Speed Sensor Data Erratic (Output shaft speed from J1939 ETCI not in normal range)‪
84‪	84‪	—‪	14‪	Vehicle Speed Sensor not Plausible‪
86‪	86‪	—‪	14‪	Adaptive Cruise Control Fault‪
91‪	91‪	—‪	3‪	Accelerator Pedal Voltage Above Normal or Shorted High‪
91‪	91‪	—‪	4‪	Accelerator Pedal Voltage Below Normal or Shorted Low‪
91‪	91‪	—‪	2‪	Accelerator Pedal Data Erratic‪

Table 3. DDEC-VCU and DDEC-ECU Fault Codes (1 of 7)

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
94‪	94‪	—‪	3‪	Fuel Pressure Sensor Open Circuit‪
94‪	94‪	—‪	4‪	Fuel Pressure Sensor Short to Ground‪
94‪	94‪	—‪	0‪	Fuel Pressure High‪
94‪	94‪	—‪	1‪	Fuel Pressure Low‪
94‪	94‪	—‪	2‪	Engine Fuel Pressure Sensor Data Not Correct‪
94‪	94‪	—‪	14‪	Engine Fuel Pressure Sensor Measured Data Not Correct‪
95‪	95‪	—‪	0‪	Fuel Restriction High‪
95‪	95‪	—‪	3‪	Fuel Restriction Circuit Failed High‪
95‪	95‪	—‪	4‪	Fuel Restriction Circuit Failed Low‪
98‪	98‪	—‪	14‪	Engine Oil Level Data Valid but Very low‪
98‪	98‪	—‪	0‪	Engine Oil Level High‪
98‪	98‪	—‪	1‪	Engine Oil Level Low‪
98‪	98‪	—‪	3‪	Engine Oil Level Sensor Voltage High‪
98‪	98‪	—‪	4‪	Engine Oil Level Sensor Voltage Low‪
98‪	98‪	—‪	5‪	Engine Oil Level Sensor Open Circuit‪
98‪	98‪	—‪	2‪	Engine Oil Level Too High or Too Low‪
100‪	100‪	—‪	1‪	Engine Oil Pressure Low‪
100‪	100‪	—‪	3‪	Engine Oil Pressure Sensor Open Circuit‪
100‪	100‪	—‪	2‪	Engine Oil Pressure Sensor Data Erratic‪
100‪	100‪	—‪	4‪	Engine Oil Pressure Sensor Short to Ground‪
100‪	100‪	—‪	14‪	Engine Oil Pressure Too Low‪
102‪	102‪	—‪	0‪	Boost Pressure High‪
102‪	102‪	—‪	1‪	Boost Pressure Low‪
102‪	102‪	—‪	2‪	Boost Pressure Sensor Data Erratic‪
102‪	102‪	—‪	3‪	Boost Pressure Sensor Open Circuit‪
102‪	102‪	—‪	4‪	Boost Pressure Sensor Short to Ground‪
102‪	102‪	—‪	13‪	Boost Pressure Out of Range‪
103‪	103‪	—‪	7‪	Turbocharger 1 No Rev‪
103‪	103‪	—‪	14‪	Turbocharger 2 No Rev‪
105‪	105‪	—‪	3‪	Intake Manifold Temperature Sensor Open Circuit‪
105‪	105‪	—‪	4‪	Intake Manifold Temperature Sensor Short to Ground‪
105‪	105‪	—‪	0‪	Intake Manifold Temperature High‪
107‪	107‪	—‪	0‪	Air Filter Restriction High‪

Table 4. DDEC-VCU and DDEC-ECU Fault Codes (2 of 7)

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
107‪	107‪	—‪	3‪	Air Filter Sensor Open Circuit‪
107‪	107‪	—‪	4‪	Air Filter Sensor Short to Ground‪
110‪	110‪	—‪	14‪	Engine Coolant Temperature Very High‪
110‪	110‪	—‪	0‪	Engine Coolant Temperature High‪
110‪	110‪	—‪	4‪	Engine Coolant Temperature Sensor Short to Ground‪
110‪	110‪	—‪	3‪	Engine Coolant Temperature Sensor Open Circuit‪
111‪	111‪	—‪	1‪	Coolant Level Low‪
111‪	111‪	—‪	3‪	Coolant Level Sensor Open Circuit‪
111‪	111‪	—‪	4‪	Coolant Level Sensor Short to Ground‪
111‪	111‪	—‪	14‪	Coolant Level Very Low‪
—‪	123‪	—‪	7‪	Optimized Idle (OI) Loop Fault‪
158‪	158‪	—‪	0‪	Switched Battery Voltage High‪
158‪	158‪	—‪	1‪	Switched Battery Voltage Low‪
158‪	158‪	—‪	2‪	Switched Battery Voltage Does Not match DDEC-ECU and DDEC-VCU‪
168‪	168‪	—‪	3‪	Battery Voltage High‪
168‪	168‪	—‪	4‪	Battery Voltage Low‪
174‪	174‪	—‪	3‪	Fuel Temperature Sensor Open Circuit‪
174‪	174‪	—‪	4‪	Fuel Temperature Sensor Short to Ground‪
175‪	175‪	—‪	3‪	Engine Oil Temperature Sensor Open Circuit‪
175‪	175‪	—‪	4‪	Engine Oil Temperature Sensor Short to Ground‪
190‪	190‪	—‪	0‪	Engine Speed High‪
216‪	—‪	216‪	14‪	Other DDEC-ECU Fault (Missing Information)‪
230‪	230‪	—‪	1‪	Idle Variation Switch (IVS) Wired Backwards‪
404‪	404‪	—‪	0‪	Turbo Compressor Out Temp High‪
404‪	404‪	—‪	1‪	Turbo Compressor Out Temp Low‪
527‪	—‪	254‪	12‪	Cruise Control – DDEC-VCU Internal Error‪
558‪	—‪	230‪	5‪	Idle Validation Switch (IVS) Open Circuit‪
558‪	—‪	230‪	12‪	Both Idle Validation Switches Closed‪ Idle Validation Switch (IVS) not Idle and Accelerator Pedal Signal Idle‪ Idle Validation Switch Idle (IVS) and Accelerator Pedal Signal not Idle‪
599‪	—‪	242‪	12‪	Cruise Control Switch Contact Set + Coast — Both SET and RES Contacts Closed at the Same Time‪

Table 5. DDEC-VCU and DDEC-ECU Fault Codes (3 of 7)

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
601‪	—‪	243‪	12‪	Cruise Control Switch Contact – Resume & Accel – Both contacts are closed at the same time.‪
609‪	—‪	233‪	2‪	Anti-Theft Device Wrong Key‪
609‪	—‪	233‪	9‪	Anti-Theft – No Transponder Code on Hardwire‪
609‪	—‪	233‪	11‪	Anti-Theft – Calibration Error‪
609‪	—‪	233‪	0‪	Anti-Theft – No Additional Key Can be Learned‪
609‪	—‪	233‪	12‪	DDEC-ECU Failure‪
609‪	—‪	233‪	14‪	DDEC-ECU Calibration Error‪
611‪	151‪	—‪	4‪	Oil Separator Diagnosis Short to Ground‪
611‪	151‪	—‪	12‪	Oil Separator Defect‪
620‪	—‪	232‪	2‪	Throttle Pedal Supply Data Erratic‪
620‪	—‪	232‪	3‪	Throttle Pedal Supply Above Normal‪
620‪	—‪	232‪	4‪	Throttle Pedal Supply Below Normal‪
625‪	—‪	248‪	14‪	Proprietary Data Link CAN Failed‪
625‪	—‪	248‪	2‪	Proprietary Data Link – No Communication Between ECU and VCU‪
629‪	—‪	254‪	12‪	DDEC-VCU Internal Error – Checksum Fault Flash‪
630‪	—‪	253‪	9‪	Engine Brake Calibration Parameters Invalid‪
633‪	—‪	21‪	1‪	Crankshaft Position Sensor Signal Voltage Too Low‪
633‪	—‪	21‪	7‪	No Match of Camshaft and Crankshaft Signals‪
633‪	—‪	21‪	8‪	Crankshaft Position Sensor Time Out‪
633‪	—‪	21‪	14‪	Crankshaft Position Sensor Pins Swapped‪
633‪	—‪	21‪	4‪	Crankshaft Position Sensor Short to Ground‪
633‪	—‪	21‪	3‪	Crankshaft Position Sensor Open Circuit‪
639‪	—‪	231‪	2‪	J1939 ETCI Message Missing‪
651‪	—‪	1‪	6‪	Injector Cylinder #1 Shorted Circuit‪
651‪	—‪	1‪	7‪	Injector Cylinder #1 No Plunger‪
651‪	—‪	1‪	5‪	Injector Cylinder #1 Current Below Normal or Open Circuit‪
651‪	—‪	1‪	4‪	Injector Cylinder #1 – Short to Ground‪
651‪	—‪	1‪	3‪	Injector Cylinder #1 – Shorted High‪
651‪	—‪	1‪	12‪	Injector Cylinder #1 – Idle Smoothness Governor at Limit‪
651‪	—‪	1‪	14‪	Injector Cylinder #1 – Single Cylinder Correction at Limit‪
652‪	—‪	2‪	6‪	Injector Cylinder #2 Shorted Circuit‪
652‪	—‪	2‪	7‪	Injector Cylinder #2 No Plunger‪

Table 6. DDEC-VCU and DDEC-ECU Fault Codes (4 of 7)

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
652‪	—‪	2‪	5‪	Injector Cylinder #2 Current Below Normal or Open Circuit‪
652‪	—‪	2‪	12‪	Injector Cylinder #2 – Idle Smoothness Governor at Limit‪
652‪	—‪	2‪	14‪	Injector Cylinder #2 – Single Cylinder Correction at Limit‪
653‪	—‪	3‪	6‪	Injector Cylinder #3 Shorted Circuit‪
653‪	—‪	3‪	7‪	Injector Cylinder #3 No Plunger‪
653‪	—‪	3‪	5‪	Injector Cylinder #3 Current Below Normal or Open Circuit‪
653‪	—‪	3‪	12‪	Injector Cylinder #3 – Idle Smoothness Governor at Limit‪
653‪	—‪	3‪	14‪	Injector Cylinder #3 – Single Cylinder Correction at Limit‪
654‪	—‪	4‪	6‪	Injector Cylinder #4 Shorted Circuit‪
654‪	—‪	4‪	7‪	Injector Cylinder #4 No Plunger‪
654‪	—‪	4‪	5‪	Injector Cylinder #4 Current Below Normal or Open Circuit‪
654‪	—‪	4‪	12‪	Injector Cylinder #4 – Idle Smoothness Governor at Limit‪
654‪	—‪	4‪	14‪	Injector Cylinder #4 – Single Cylinder Correction at Limit‪
655‪	—‪	5‪	6‪	Injector Cylinder #5 Shorted Circuit‪
655‪	—‪	5‪	7‪	Injector Cylinder #5 No Plunger‪
655‪	—‪	5‪	5‪	Injector Cylinder #5 Current Below Normal or Open Circuit‪
655‪	—‪	5‪	12‪	Injector Cylinder #5 – Idle Smoothness Governor at Limit‪
655‪	—‪	5‪	14‪	Injector Cylinder #5 – Single Cylinder Correction at Limit‪
656‪	—‪	6‪	6‪	Injector Cylinder #6 Shorted Circuit‪
656‪	—‪	6‪	7‪	Injector Cylinder #6 No Plunger‪
656‪	—‪	6‪	5‪	Injector Cylinder #6 Current Below Normal or Open Circuit‪
656‪	—‪	6‪	12‪	Injector Cylinder #6 – Idle Smoothness Governor at Limit‪
656‪	—‪	6‪	14‪	Injector Cylinder #6 – Single Cylinder Correction at Limit‪
657‪	—‪	7‪	6‪	Injector Cylinder #7 Shorted Circuit‪
657‪	—‪	7‪	7‪	Injector Cylinder #7 No Plunger‪
657‪	—‪	7‪	5‪	Injector Cylinder #7 Current Below Normal or Open Circuit‪
657‪	—‪	7‪	12‪	Injector Cylinder #7 – Idle Smoothness Governor at Limit‪
657‪	—‪	7‪	14‪	Injector Cylinder #7 – Single Cylinder Correction at Limit‪
658‪	—‪	8‪	6‪	Injector Cylinder #8 Shorted Circuit‪
658‪	—‪	8‪	7‪	Injector Cylinder #8 No Plunger‪
658‪	—‪	8‪	5‪	Injector Cylinder #8 Current Below Normal or Open Circuit‪
658‪	—‪	8‪	12‪	Injector Cylinder #8 – Idle Smoothness Governor at Limit‪
658‪	—‪	8‪	14‪	Injector Cylinder #8 – Single Cylinder Correction at Limit‪
677‪	—‪	39‪	3‪	Engine Starter Relay Shorted to High Source‪

Table 7. DDEC-VCU and DDEC-ECU Fault Codes (5 of 7)

J1939‪ SPN‪	J1587‪ PID‪	J1587‪ SID‪	FMI‪	Description‪
677‪	—‪	39‪	5‪	Engine Starter Relay Open Circuit‪
677‪	—‪	39‪	6‪	Engine Starter Relay Shorted to Ground‪
677‪	—‪	39‪	7‪	Engine Starter Relay — Starter Does Not Engage‪
677‪	—‪	39‪	14‪	Engine Starter Relay Jammed‪
696‪	—‪	57‪	3‪	Aux PWM #1 Shorted High‪
696‪	—‪	57‪	4‪	Aux PWM #1 Short to Ground‪
696‪	—‪	57‪	5‪	Aux PWM #1 Open Circuit‪
696‪	—‪	57‪	6‪	Aux PWM #1 High Side Line Shorted to Ground‪
696‪	—‪	58‪	3‪	Aux PWM #2 Shorted High‪
696‪	—‪	58‪	5‪	Aux PWM #2 Open Circuit‪
696‪	—‪	58‪	6‪	Aux PWM #2 High Side Line Shorted to Ground‪
699‪	—‪	59‪	3‪	Aux PWM #3 Shorted High‪
699‪	—‪	59‪	5‪	Aux PWM #3 Open Circuit‪
699‪	—‪	59‪	6‪	Aux PWM #3 High Side Line Shorted to Ground‪
700‪	—‪	60‪	3‪ < Posted in MBE 900, Troubleshooting Troubleshooting List of Contents MBE 900 – Section 15.17 Poor Fuel Economy MBE 900 – Section 15.15 High Engine Coolant Temperature MBE 900 – Section 15.16 Low Coolant Temperature MBE 900 – Section 15.14 Low Oil Pressure MBE 900 – Section 15.12 Rough Running or Stalling MBE 900 – Section 15.13 Lack of Power MBE 900 – Section 15.10 Excessive Blue Smoke MBE 900 – Section 15.11 Excessive White Smoke MBE 900 – Section 15.8 Excessive Crankcase Pressure MBE 900 – Section 15.9 Excessive Exhaust Smoke (Black or Gray) MBE 900 – Section 15.6 No Start (Engine Will Not Rotate) MBE 900 – Section 15.7 Excessive Oil Consumption MBE 900 – Section 15.3 Fuel Injection Troubleshooting MBE 900 – Section 15.4 Misfiring Cylinder MBE 900 – Section 15.5 Starting Difficulty (Engine Rotates) MBE 900 – Section 15.2 General Troubleshooting MBE 900 – Section 15.1 Troubleshooting the Electronic Engine Control System Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ Search for: Bearings DD15 Engine Fuel System DD15 Troubleshooting DDEC III/IV Single ECM Troubleshooting Series 60 DDEC V Troubleshooting MBE 900 DDEC VI Troubleshooting MBE 4000 DDEC VI Troubleshooting Series 60 DDEC VI Troubleshooting DD15 Troubleshooting DDEC III/IV Single ECM Troubleshooting DD15 Engine Fuel System MBE 900 4000 Troubleshooting Series 50G & 60G Troubleshooting MBE 900 MBE 4000 Series 55 Series 40E Troubleshooting Series 638 Series 40E Series 60 EGR MBE 900 & MBE 4000 EGR Series 60 © Copyright 2024 – Detroit Diesel Engine Troubleshooting Wisteria Theme by WPFriendship ⋅ Powered by WordPress

Section 15.1 Troubleshooting the Electronic Engine Control System

Section 15.1.1 Engine Fault Codes

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Section 15.1
Troubleshooting the Electronic Engine Control System

Section 15.1.1
Engine Fault Codes