DETROIT DIESEL Engine Fault Codes DTC

Detroit Diesel Corporation (DDC) is an American diesel engine manufacturer headquartered in Detroit, Michigan, United States. It is a subsidiary of Daimler Truck North America, which is itself a wholly owned subsidiary of the mulitinational Daimler Truck AG. The company manufactures heavy-duty engines and chassis components for the on-highway and vocational commercial truck markets. Detroit Diesel has built more than 5 million engines since 1938, more than 1 million of which are still in operation worldwide. Detroit Diesel’s product line includes engines, axles, transmissions, and a Virtual Technician service. Detroit engines, transmissions, and axles are used in several models of truck manufactured by Daimler Truck North America.

DETROIT DIESEL Engine Fault Codes list

Code Description DDEC V Circuit

11 P 187 4 Chain PTO. Short circuit in the power
11 P 187 7 control system PTO wrong answers
12 P 187 3 Chain PTO. Short circuit in the ground
13 P 111 4-level circuit antifreeze. Short circuit in the ground
13 P 111 6 second-level circuit antifreeze. Short circuit in the ground
14 P 52 3 circuit coolant temperature intercooler. Short circuit in the power
14 P 110 3 circuit temperature antifreeze. Short circuit in the power
14 P 175 3 Chain oil temperature. Short circuit in the power
15 P 52 4 circuit coolant temperature intercooler. Short circuit in the ground
15 P 110 4 circuit temperature antifreeze. Short circuit in the ground
15 P 175 4 Chain oil temperature. Short circuit in the ground
16 P 111 3-level circuit antifreeze. Short circuit in the power
16 P 111 5 second circuit level antifreeze. Short circuit in the power
17 P 51 3 Throttle position circuit failed high
17 P 72 3 Bypass position circuit failed high
17 P 3 354 Relative humidity sensor circuit failed high
18 P 51 4 Throttle position circuit failed low
18 P 72 4 Bypass position circuit failed low
18 P 354 4 Relative humidity sensor circuit failed low
21 P 91 3 TPS circuit failed high
22 P 91 4 TPS circuit failed low
23 s 65 3 Oxygen content circuit failed high
23 P 174 3 Chain fuel temperature. Short circuit in the power
24 s 65 4 Oxygen content circuit failed low
24 p 174 4 Chain fuel temperature. Short circuit in the ground
25 no codes
26 s 25 November Aux. shutdown # 1 active
26 S 61 11 Aux. shutdown # 2 active (Incorrect SID. subject to change)
27 p 105 3 circuit temperature in the reservoir. Short circuit in the power
27 p 171 3 Ambient air temp circuit failed high
27 p 172 3 Air temp, circuit failed high
28 p 105 to 4 Chain manifold temperature. Short circuit in the ground
28 p 171 4 Ambient air temp circuit failed low
28 p 172 4 Air temp, circuit failed low
29 p 404 4 TCO temperature circuit failed low
29 p 351 4 TCI Temperature circuit failed low
31 S 51 3 Aux. Output # 3 open circuit (high side) S3
31 S 51 4 Aux. Output # 3 short to ground (high side) S3
31 S 51 7 Aux. Output # 3 mech. system fail S3
31 s 52 3 Aux. Output # 4 open circuit (high side) T3
31 s 52 4 Aux. Output # 4 short to ground (high side) T3
31 s 52 7 Aux. Output # 4 mech. system fail T3
32 S 238 3 SEL short to battery B1
32 S 238 4 SEL open circuit B1
32 s 239 3 CEL short to battery B2
32 s 239 4 CEL open circuit B2
33 p 102 3 Boost pressure circuit failed high
34 p 102 4 Boost pressure circuit failed low
35 p 19 March Ext range oil pressure circuit failed high
35 p 100 3 Chain oil pressure. Short circuit in the power
36 P 19 April Ext range oil pressure circuit failed low
36 P 100 4 Chain oil pressure. Short circuit in the ground
37 P 18 March Ext range fuel pressure circuit failed high
37 P 94 3 Chain fuel pressure. Short circuit in the power
37 P 95 3 Fuel Filter Restriction circuit failed high
38 P 18 April Ext range fuel pressure circuit failed low
38 P 94 4 Chain fuel pressure. Short circuit in the ground
38 P 95 4 Fuel Filter Restriction circuit failed low
39 S 146 2 Mechanical error EGR valve
39 S 146 12 Mechanical error EGR valve
39 S 146 return valve 7 does not meet the exhaust
39 S 147 2 turbocharger control mechanism does not respond
39 s 147 12 turbocharger control mechanism does not respond
39 s 14 147 current returns exhaust gases enough
39 S 147 11 turbocharger control mechanism does not respond
39 S 147 7 turbocharger control mechanism does not respond
41 S 21 0 Too many SRS (missing TRS)
42 S 21 January Too few SRS (missing SRS)
43 p 111 1 Low coolant level
44 p 52 0 ntercooler coolant temp, high
44 p 105 0 temperature in the reservoir above the norm
44 p 110 0 antifreeze temperature above normal
44 p 172 0 Air inlet temp, high
44 p 175 0 Oil temperature above normal
45 p 19 January Ext range oil pressure low
45 p 100 1 Oil pressure below normal
46 p 168 1 Low voltage batteries
46 S 214 1 RTC Backup Battery Voltage Low
46 S 232 1 Sensor Supply Voltage Low A3 & W1
P 0 47 18 Ext range fuel pressure high
P 47 94 0 The fuel pressure above normal
47 p 0 102 Turbo boost press high
47 p 106 0 Air inlet pressure high or TCBV diff press high
47 p 164 0 Injection control pressure high
48 p 18 January Ext range fuel pressure low
48 p 94 1 fuel pressure below normal
48 p 106 1 Air inlet pressure low
48 p 164 1 Injection control pressure low
48 p 351 1 TCI Temperature below range
48 p 404 1 TCO Temperature below range
48 p 411 1 EGR Delta pressure low
48 p 412 1 EGR Temperature low
49 p 351 0 TCI Temperature above range
49 p 404 0 TCO Temperature above range
51 p 351 3 TCI Temperature circuit failed high
51 p 404 3 TCO Temperature circuit failed high
52 s 12 254 A / D Conversion fail
S 253 53 12 EE PROM write error
53 S 253 13 Out of Calibration
53 S 253 2 Nonvolatile checksum incorrect
P 54 84 12 Vehicle speed sensor fault
55 S 216 14 Missing other ECU information (should not occur without another fault which indicates the data missing from other ECU)
55 S 231 12 939 A data link fault
S 248 55 8 Proprietary link fault (master)
55 S 248 9 Proprietary link fault (slave)
56 S 250 12 587 A data link fault
57 S 249 12 922 A data link fault
58 p 92 0 Torque overload
61 s 1 0 Injector # 1 responds too slowly
61 s 2 0 Injector # 2 responds too slowly
61 s 3 0 Injector # 3 responds too slowly
61 s 4 0 Injector # 4 answers too slowly
61 S 5 0 Injector # 5 answers too slowly
61 S 6 0 Injector # 6 answers too slowly
62 S 26 March Aux. Output # 1 short to battery F3
62 S 26 April Aux. Output # 1 open circuit F3
62 S 26 July Aux. Output # 1 mech. system fail F3
62 S 40 3 Aux. Output # 2 short to battery A2
62 S 40 4 Aux. Output # 2 open circuit A2
62 S 40 7 Aux. Output # 2 mech. system fail A2
62 S 53 3 Aux. Output # 5 short to battery W3
62 S 53 4 Aux. Output # 5 open circuit W3
62 S 53 7 Aux. Output # 5 mech. system fail W3
62 S 54 3 Aux. Output # 6 short to battery X3
62 S 54 4 Aux. Output # 6 open circuit X3
62 S 54 7 Aux. Output # 6 mech. system fail X3
62 S 55 3 Aux. Output # 7 short to battery Y3
62 S 55 4 Aux. Output # 7 open circuit Y3
62 S 55 7 Aux. Output # 7 mech. system fail Y3
62 S 56 3 Aux. Output # 8 short to battery A1
62 S 56 4 Aux. Output # 8 open circuit A1
62 S 56 7 Aux. Output # 8 mech. system fail A1
63 S 57 0 PWM # 1 above normal range J3
63 S 57 1 PWM # 1 below normal range J3
63 S 57 3 PWM # 1 short to battery J3
63 S 57 4 PWM # 1 open circuit J3
63 S 58 0 PWM # 2 above normal range Y1
63 S 58 1 PWM # 2 below normal range Y1
63 S 58 3 PWM # 2 short to battery Y1
63 S 58 4 PWM # 2 open circuit Y1
63 S 59 0 PWM # 3 above normal range W2
63 S 59 1 PWM # 3 below normal range W2
63 S 59 3 PWM # 3 short to battery W2
63 S 59 4 PWM # 3 open circuit W2
63 S 60 0 PWM # 4 above normal range X2
63 S 60 1 PWM # 4 below normal range X2
63 S 60 3 PWM # 4 short to battery X2
63 S 60 4 PWM # 4 open circuit X2
64 p 0 103 Turbo Overspeed
64 8 p 103 Turbo speed circuit failed
65 p 51 0 Throttle position above range
65 p 51 1 Throttle position below range
65 p 51 2 Throttle position erratic
65 p 51 7 Throttle not responding
65 p 107 3 Air filter restriction circuit failed high
65 p 107 4 Air filter restriction circuit failed low
66 S 76 0 Knock control above range
66 S 76 3 Knock control circuit shorted high
66 S 76 4 Knock control circuit shorted low
66 S 76 7 No response to knock control
66 p 99 3 Oil filter restriction circuit failed high
66 p 99 4 Oil filter restriction circuit failed low
67 p 20 March Ext range coolant pressure circuit failed high
67 p 20 April Ext range coolant pressure circuit failed low
67 p 106 3 Air inlet pressure circuit failed high
67 p 106 4 Air inlet pressurecircuit failed low
67 p 109 3 Coolant pressure circuit failed high
67 p 109 4 Coolant pressure circuit failed low
68 S 230 5 IVS circuit fault, open circuit
68 S 230 6 IVS circuit fault, grounded circuit
71 S 1 January Injector # 1 responds too quickly
71 S 1 February Injector # 2 responds too quickly
71 S March 1 Injector # 3 answers too quickly
71 S 1 April Injector # 4 answers too quickly
71 S May 1 Injector # 5 answers too quickly
71 S 1 June Injector # 6 answers too quickly
72 S 65 0 Oxygen content too high
72 S 65 1 Oxygen content too low
72 p 84 0 Vehicle overspeed
P 72 84 11 Vehicle overspeed (absolute)
73 S 77 0 Gas metering valve data above range
73 S 77 1 Gas metering valve data below range
73 s 77 3 Gas metering valve circuit shorted high
73 s 77 4 Gas metering valve circuit shorted low
73 S 77 7 Gas metering valve not responding
73 p 107 0 Air filter restriction high
73 S 151 14 ESS fault – Stuck in gear detected
73 S 226 11 Transmission neutral switch fault not identifiable
73 S 227 2 ESS fault – aux. analog input # 1 data incorrect
73 S 227 3 ESS fault – aux. analog input # 1 voltage above normal
73 S 227 4 ESS fault – aux. anlg input # 1 voltage shorted low
74 p 70 4 Safety loop shorted to gnd
P 0 74 99 Oil filter restriction high
75 p 168 0 Battery voltage high
75 S 214 0 RTC Backup Battery Voltage High
75 S 232 0 Sensor Supply Voltage High A3 & W1
76 p 0 121 Engine Overspeed with Engine Brake
77 p 19 0 Extended range oil pressure above range
77 p 20 0 Extended range coolant pressure above range
77 p 72 0 Bypass blower door position above range
11 p 72 1 Bypass blower door position below range
11 p 73 1 Fire pump pressure below range
P 11 81 0 Exhaust backpressure above range
11 p 1 81 Exhaust backpressure below range
11 p 81 12 Exhaust backpressure at rampdown threshold
11 p 81 3 Exhaust backpressure failed high
11 p 81 4 Exhaust backpressure failed low
11 p 95 1 Fuel filter differential pressure below range
11 p 99 1 Oil filter differentail pressure below range
11 p 0 100 Engine oil pressure above range
11 p 102 1 Turbo boost pressure below range
11 p 105 1 Inlet manifold temperature below range
11 p 107 1 Air filter differential pressure below range
11 p 354 0 Relative humidity above range
11 p 354 1 Relative humidity below range
11 p 108 0 Barometric pressure above range
11 108 1 p Barometric pressure below range
11 p 109 0 Coolant pressure above range
11 p 110 1 Coolant temperature below range
11 p 111 0 Coolant level above range
171 171 0 p Ambient air temperature above range
171 p 171 1 Ambient air temperature below range
11 p 172 1 Air inlet temperature below range
11 p 174 0 Fuel temperature above range
P 11 174 1 Fuel temperature below range + E274
11 p 175 1 Engine oil temperature below range
11 p 177 0 Transmission oil temperature above range
11 p 177 1 Transmission oil temperature below range
11 p 177 3 Transmission oil temperature failed high
11 p 177 4 Transmission oil temperature failed low
11 p 222 14 Anti theft fault present
11 p 251 10 Clock module abnormal rate of change
11 p 251 13 Clock module failure
11 p 252 10 Clock module abnormal rate of change
11 p 252 13 Clock module failure
11 p 446 0 Cylinder head temperature above range
P 78 86 14 Cruise Control / Adaptive Cruise Control
81 p 98 3 Oil level circuit failed high
81 p 101 3 Crankcase press, circuit failed high
81 p 153 3 High res crankcase press. Circuit failed high
81 p 164 3 Injection cntl press circuit failed high
81 p 173 3 Exhaust gas temperature circuit failed high
81 S 277 9 EGR mass flow smart sensor not responding
81 S 277 12 EGR mass flow smart sensor failed
81 p 411 3 EGR Delta pressure circuit failed high
81 p 412 3 EGR Temperature circuit failed high
82 S 412 9 EGR temperature smart sensor not responding
82 S 412 12 EGR temperature smart sensor failed
82 p 98 4 Oil level circuit failed low
82 p 101 4 Crankcase press, circuit failed low
82 p 153 4 High res crankcase press. circuit failed low
82 p 164 4 Injection cntl press circuit failed low
82 p 173 4 Exhaust gas temperature circuit failed low
82 p 411 4 EGR Delta pressure circuit failed low
82 p 412 4 EGR Temperature circuit failed low
83 p 73 0 Aux. pump pressure above range
83 p 98 0 Oil level high
83 p 101 0 Crankcase pressure high
83 p 0 153 High res crankcase Pressure high
83 p 0 173 Exhaust gas temperature high
83 p 411 0 EGR Delta pressure high
83 p 412 0 EGR Temperature high
84 p 98 1 Oil level low
84 p 101 1 Crankcase pressure low
84 p 153 1 High Res Crankcase Pressure low
P 85 190 0 Engine overspeed
85 p 190 14 Engine Overspeed Signal
86 p 73 3 Aux. pump pressure circuit failed high
86 p 108 3 Baro. pressure circuit failed high
87 p 73 4 Aux. pump pressure circuit failed low
87 p 108 4 Baro. pressure circuit failed low
88 p 20 January Ext range coolant pressure low
88 p 109 1 Coolant pressure low
89 p 95 0 Fuel Filter Restriction high
89 p 111 12 Maintenance monitor Coolant level fault
S 240 2 FRAM checksum incorrect
S 240 13 FRAM out of calibration

DDEC IV EGR DESCRIPTIONS

To read codes, use the Detroit Diesel Diagnostic Link (DDDL). The DDDL will display active and inactive fault codes which are listed in Table.

Flash Codes, SAE Codes, Descriptions

DDC Code
# (Flashed)
PID SID FMI Description
11 187 4 Variable Speed Governor Sensor Voltage Low
12 187 3 Variable Speed Governor Sensor Voltage High
13 111 4 Coolant Level Sensor Input Voltage Low
14 110 3 Coolant Temperature Sensor Input Voltage High
14 175 3 Oil Temperature Sensor Input Voltage High
15 110 4 Coolant Temperature Sensor Input Voltage Low
15 175 4 Oil Temperature Sensor Input Voltage Low
16 111 3 Coolant Level Sensor Input Voltage High
17 354 3 Relative Humidity Sensor Circuit Failed High
18 354 4 Relative Humidity Sensor Circuit Failed Low
21 91 3 Throttle Position Sensor Input Voltage High
22 91 4 Throttle Position Sensor Input Voltage Low
23 174 3 Fuel Temperature Sensor Input Voltage High
24 174 4 Fuel Temperature Sensor Input Voltage Low
25 Reserved for ‘‘No Codes”
26 25 11 Aux. Shutdown #1 Active
26 61 11 Aux. Shutdown #2 Active
27 105 3 Intake Manifold Temperature Sensor Input Voltage High
27 171 3 Ambient Air Temperature Sensor Input Voltage High
28 105 4 Intake Manifold Temperature Sensor Input Voltage Low
28 171 4 Ambient Air Temperature Sensor Input Voltage Low
29 351 4 TCI Temperature Circuit Failed Low
29 404 4 TCO Out Sensor Input Voltage Low
31 51 3 Aux. Output #3 Open Circuit (High Side) – S3
31 51 4 Aux. Output #3 Short To Ground (High Side) – S3
31 51 7 Aux. Output #3 Mechanical System Fail – S3
31 52 3 Aux. Output #4 Open Circuit (High Side) – T3
31 52 4 Aux. Output #4 Short to Ground (High Side) – T3
31 52 7 Aux. Output #4 Mechanical System Failure – T3
32 238 3 SEL Short to Battery (+)
32 238 4 SEL Open Circuit
32 239 3 CEL Short to Battery (+)
32 239 4 CEL Open Circuit
33 102 3 Turbo Boost Pressure Sensor Input Voltage High
34 102 4 Turbo Boost Pressure Sensor Input Voltage Low
35 100 3 Oil Pressure Sensor Input Voltage Low
36 100 4 Oil Pressure Sensor Input Voltage Low
37 94 3 Fuel Pressure Sensor Input Voltage High
38 94 4 Fuel Pressure Sensor Input Voltage Low
39 146 2 EGR Leak – Boost Power
39 146 12 EGR Leak – Boost Jake
39 146 7 EGR Valve Not Responding
39 147 2 VNT Vanes Not Responding – Boost Power
39 147 11 VNT Vanes at Max – Jake
39 147 12 VNT Vanes Not Responding – Boost Jake
39 147 14 EGR Flow too Low
39 147 7 VNT Vanes Not Responding – EGR
41 21 0 Too Many SRS (missing TRS)
42 21 1 Too few SRS (missing SRS)
43 111 1 Coolant Level Low
44 105 0 Intake Manifold Temperature High
44 110 0 Coolant Temperature High
44 172 0 Air Inlet Temperature High
44 175 0 Oil Temperature High
105 14 Inlet Manifold Temperature Derate
110 14 Coolant Temperature Derate
45 100 1 Oil Pressure Low
46 168 1 ECM Battery Voltage Low
46 214 1 RTC Backup Battery Voltage Low
46 232 1 Sensor Supply Voltage Low
47 102 0 Turbo Boost Pressure High
47 106 0 Air Inlet Pressure High
48 106 1 Air Inlet Pressure Low
48 411 1 EGR OPD Low
48 412 1 EGR Temperature Low
49 404 0 Turbo Compressor Out Temperature High
404 14 TCO Temperature Derate
51 404 3 Turbo Compressor Out Temperature Sensor Input Voltage High
52 254 12 A/D Conversion Fail
53 253 2 Nonvolatile Checksum Incorrect
53 253 12 EEPROM Write Error
53 253 13 Out of Calibration
54 84 12 Vehicle Speed Sensor Fault
55 216 14 Other ECM Fault
55 231 12 J1939 Data Link Fault
56 250 12 J1587 Data Link Fault
57 249 12 J1922 Data Link Fault
58 92 0 Torque Overload
61 xxx 0 Injector xxx Response Time Long
62 26 3 Aux. Output #1 Short to Battery (+) – F3
62 26 4 Aux. Output #1 Open Circuit – F3
62 26 7 Aux. Output #1 Mechanical System Not Responding Properly – F3
62 40 3 Aux. Output #2 Short to Battery (+) – A2
62 40 4 Aux. Output #2 Open Circuit – A2
62 40 7 Aux. Output #2 Mechanical System Not Responding Properly – A2
62 53 3 Aux. Output #5 Short to Battery (+) – W3
62 53 4 Aux. Output #5 Open Circuit – W3
62 53 7 Aux. Output #5 Mechanical System Not Responding Properly – W3
62 54 3 Aux. Output #6 Short to Battery (+) – X3
62 54 4 Aux. Output #6 Open Circuit – X3
62 54 7 Aux. Output #6 Mechanical System Not Responding Properly – X3
62 55 3 Aux. Output #7 Short to Battery (+) – Y3
62 55 4 Aux. Output #7 Open Circuit – Y3
62 55 7 Aux. Output #7 Mechanical System Not Responding Properly – Y3
62 56 3 Aux. Output #8 Short to Battery (+) – A1
62 56 4 Aux. Output #8 Open Circuit – A1
62 56 7 Aux. Output #8 Mechanical System Not Responding Properly – A1
63 57 0 PWM #1 Above Normal Range
63 57 1 PWM #1 Below Normal Range
63 57 3 PWM #1 Short to Battery (+)
63 57 4 PWM #1 Open Circuit
63 58 0 PWM #2 Above Normal Range
63 58 1 PWM #2 Below Normal Range
63 58 3 PWM #2 Short to Battery (+)
63 58 4 PWM #2 Open Circuit
63 59 0 PWM #3 Above Normal Range
63 59 1 PWM #3 Below Normal Range
63 59 3 PWM #3 Short to Battery (+)
63 59 4 PWM #3 Open Circuit
63 60 0 PWM #4 Above Normal Range
63 60 1 PWM #4 Below Normal Range
63 60 3 PWM #4 Short to Battery (+)
63 60 4 PWM #4 Open Circuit
64 103 0 Turbo Overspeed
64 103 8 Turbo Speed Sensor Input Failure – Abnormal Period
67 106 3 Air Inlet Pressure Sensor Input Voltage High
67 106 4 Air Inlet Pressure Sensor Input Voltage Low
68 230 5 TPS Idle Validation Circuit Fault (open circuit)
68 230 6 TPS Idle Validation Circuit Fault (short to ground)
71 xxx 1 Injector xxx Response Time Short
72 84 0 Vehicle Overspeed
72 84 11 Vehicle Overspeed (Absolute)
73 151 14 ESS Transmission Stuck in Gear
73 226 11 Transmission Neutral Switch Failure (ESS Transmission)
73 227 2 Aux Analog Input Data Erratic, Intermittent, or Incorrect (ESS Transmission)
73 227 3 Aux Analog Input #1 Voltage High (ESS Transmission)
73 227 4 Aux Analog Input #1 Voltage Low (ESS Transmission)
74 70 4 Optimized Idle Safety Loop Short to Ground
74 99 0 Oil Filter Restriction High
75 168 0 ECM Battery Voltage High
75 214 0 RTC Backup Battery Voltage High
75 232 0 Sensor Supply Voltage High
76 121 0 Engine Overspeed With Engine Brake
77 100 0 Engine Oil Pressure High
77 102 1 Turbo Boost Pressure Low
77 108 0 Barometric Pressure High
77 108 1 Barometric Pressure Low
77 174 0 Fuel Temperature High
77 354 0 Relative Humidity Above Range
77 354 1 Relative Humidity Below Range
78 86 14 Cruise Control/Adaptive Cruise Control Fault
81 411 3 EGR Delta pressure circuit failed high
81 412 3 EGR temperature circuit failed high
81 412 9 EGR temperature smart sensor not responding
82 412 9 EGR Temperature Smart Sensor not Responding
82 412 12 EGR Temperature Smart Sensor Failed
82 411 4 EGR Delta pressure circuit failed low
82 412 4 EGR Temperture circuit failed low
83 73 0 Pump Pressure High
83 411 0 EGR Delta Pressure High
83 412 0 EGR Temperature High
85 190 0 Engine Overspeed
85 190 14 Engine Overspeed Signal
86 73 3 Pump Pressure Sensor Input Voltage High
86 108 3 Barometric Pressure Sensor Input Voltage High
87 73 4 Pump Pressure Sensor Input Voltage Low
87 108 4 Barometric Pressure Sensor Input Voltage Low

LOGIC CODES (MECHANICAL FAILURES)

Logic codes indicate the detection of mechanical failures by the DDEC system. The response will be a Flash Code.

Diagnosing Flash Code 39

Failure Mode: SID 146, FMI 7 — EGR Valve Not Responding
Indicates: EGR flow requested by DDEC and no EGR flow detected.

SID 146, FMI 7 will be set by the ECM if, the signal from the Delta P sensor and EGR temperature sensor indicate EGR flow is below a minimum allowable flow when the ECM is in “EGR Mode” for a period greater than 50 seconds.
Response: The CEL will be illuminated and the system will be forced into “Boost Mode” (EGR is Disabled) for the remainder of the ignition cycle.
Possible Causes:

  • EGR valve mechanical failure (closed);
  • Plugged EGR cooler;
  • Defective Delta P sensor;
  • Plugged Delta P ports;
  • VNT vanes stuck in an open position;
  • Exhaust leaking at the S Pipe;
  • Exhaust leaking at the EGR valve;
  • Leaking air lines from the VPOD to the actuators (insufficient air supply);
  • Leaking or low vehicle air supply to the VPODs;
  • VPOD mechanical failure.