Just got my rig started up. Throwing a fault code spn 000729 FMI 03 OC 2. Anyone know what this is?
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Murphy fault code
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Is your fused link in there? Are you running a very long wire or maybe there's some resistance there? I let mine idle a few seconds and after shutting off and turning back on I never had a code come on. I assume all fluids are in there. But maybe there's a loose wire somewhere. Maybe review your grounds.
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Got it figured out. Had the grid heater mounted but forgot to attach it to the battery. After that I don’t think the code came up again. So far so good. A few little things to clean up electrically but it’s on its way! Thanks dieseljeep. Very excited to drive this thing
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It would be nice to share a few basics on interrpetting fault codes? What do SPN, FMI, and OC stand for?
I got a SPN 000097 FMI 03 OC 002
I assume I've got something on the harness hooked up incoreclty, beucase this only showed up after moving our bulkhead fitting and wiring a fan relay.
Do all R2.8 owners get acces to the Fault Code Analyer Tool (FCAT) on Quickserve Online? I can't find it when I log in with my ESN. I downloaded the Fault Code Analyzer on my iphone, but is tells me 97 or 000097 is not applicable to my ESN.
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Don! I know you know this by now but for the sake of others who may be reading this later on:
SPN = Suspect Parameter Numbers (What is the component or sensor)
FMI = Failure Mode Identifier (What's wrong with it)
OC = Occurrence (How many times has it happened)
Your specific fault was due to Water In Fuel (WIF) sensor not being hooked up at your fuel filter:
"Water in Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source"
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I had this error message too, my installer didn't create the water in fuel circuit so I'm going to do it. I think I have the right connectors ordered from amazon. Need to find some 18ga wire...
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Anyone on this forum know if the connector were sourced with the engine? Probably long gone by now in all the boxes thrown out but I'll ask anyway.
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i got this code on my truck 2 months ago, i googled it and found :
Inlet Air Heater Relay Output (cc# 189) Is High When Engine Control Unit Is Not Energizing The Glow Plug Relay (9540)
https://spnfmi.com/spn-729-fmi-03
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Did that go away or has it been continuous?
Am I reading it right that it's like the grid heater has power, though it hasn't received a signal to be powered? I wonder if you've got some kind of short in the area or loose wire? I'm no expert. Good luck.
I freaked out this summer with some weird codes and ultimately realized that the main bulkhead plug into the cab of the vehicle wasn't tightened properly. I thought I had twisted it and locked it in, but I just twisted both sides of the plug and vibrations over the years had loosened up the connection.
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