Fault code 73

[Odie.kennedy]

I would like to say thanks for the great forum I have learned and fixed a lot of things on my MH just from reading different post but this one I am stuck on I got a 2000 mountain aire mh with a spartan chassis and a cummins 350 I got a check engine light on the one that looks like a upside down light bulb with a ! In the middle of it any ways I just got my scangauge d and it pulls a code 73 I can't find anything about this code anybody ever had this one any help would be highly appreciated

[palehorse89]

Originally Posted by Odie.kennedy

I would like to say thanks for the great forum I have learned and fixed a lot of things on my MH just from reading different post but this one I am stuck on I got a 2000 mountain aire mh with a spartan chassis and a cummins 350 I got a check engine light on the one that looks like a upside down light bulb with a ! In the middle of it any ways I just got my scangauge d and it pulls a code 73 I can't find anything about this code anybody ever had this one any help would be highly appreciated

Hello and welcome! Did you look on page 38 of the scan gauge manual to see how to read the code?



Decoding DTCs
DTCs or Detected Trouble Codes, vary from
vehicle to vehicle. The DTC for vehicles that
use J1939 and J1708 protocols are made up of
two parts; an Error Code ID and a Failure Mode
ID. The two parts combine to form the DTC.
Error Code ID (ID)
The Error Code number indicates the system
or component that has reported the problem.
There are hundreds of possible error codes,
so finding information about your specific
code can be a challenge. An excellent way to
determine the system or component the Error
Code refers to is to use a good search engine
on the Internet.
Use the Error Codes along with the model and
year of your vehicle as the search words. You
can add your engine type to narrow the search.
Failure Mode ID (FM)
The Failure Mode ID (FM) indicates the nature
of problem that was detected. The table to the
right lists the standard Failure Mode IDs.
Example DTC Code
The code shown in the example screen to the
upper right - “100 1” would indicate:
Low Oil Pressure
ID 100 = Oil Pressure
FM 1 = Data valid but below normal
operating range
Failure Mode IDs
ID Description
0 Data valid but above normal
operational range
1 Data valid but below normal
operational range
2 Data erratic, intermittent or incorrect
3 Voltage above normal or shorted high
4 Voltage below normal or shorted low
5 Current below normal or open circuit
6 Current above normal or grounded
circuit
7 Mechanical system not responding
properly
8 Abnormal frequency, pulse width,
or period
9 Abnormal update rate
10 Abnormal rate of change
11 Failure mode not identifiable
12 Bad intelligent device or component
13 Out of calibration
14 Special Instructions
15 Reserved for future assignment

The light you describe is a engine "Fault" light.........The scan gauge will get you close to the problem, but the fault could be one of many things throwing that one code. Take a look at the screen again and see if you are coming up with the right code to be looking for.........
Might just have to have it hooked up to the Cummins Insite program to pin point the exact problem.

[Odie.kennedy]

The exact thing I get is 73 11
73 being The ID AND 11 being the FM

I was trying to avoid going to cummins they charge around 150 just to pull the codes

[palehorse89]

Originally Posted by Odie.kennedy

The exact thing I get is 73 11
73 being The ID AND 11 being the FM

I was trying to avoid going to cummins they charge around 150 just to pull the codes

I would call them in the morning, they are very helpful......

Linear Logic, LLC

2222 S. Dobson Rd Suite 800
Mesa, Arizona 85202
Phone: 480-656-4089
Fax: 480-656-4418


Here is a list of code for it I found on the web:


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
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

[Odie.kennedy]

Well thank you

[Odie.kennedy]

Well looking further into it I found PID 73 FM 11 means fault code 278 lift pump circuit

[palehorse89]

Originally Posted by Odie.kennedy

Well looking further into it I found PID 73 FM 11 means fault code 278 lift pump circuit

Interesting.......can you hear the "Buzzing" sound from your lift pump when you turn your key on?

[Odie.kennedy]

Had the wife turn the key on and it buzzes for any where from 2 seconds to 5 so I thought it was jamming up but I tested the wires to the pump and they lose power to so I am at a loss again

[palehorse89]

Originally Posted by Odie.kennedy

Had the wife turn the key on and it buzzes for any where from 2 seconds to 5 so I thought it was jamming up but I tested the wires to the pump and they lose power to so I am at a loss again

That lift pump should run for 60-90 seconds in order to prime the main high pressure fuel pump. Find the screw together connections off the ECM, inspect it making sure it is clean, spray with good electrical spray to start with. The ECM controls the lift pump. Maybe this will help you find the power problem........Also, use the search bar at the top of the page and you will find a lot of info. on the lift pumps.

[Odie.kennedy]

I will try that tonight when I get home it's weird because the MH will start every time