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go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1196
Experience:  Technican with 20 years experience focused on engines and electrical.
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What can cause flash code 41 on a 60 series 12 liter engine

Customer Question

What can cause flash code 41 on a 60 series 12 liter engine ? The truck sounds like it almost wants to crank and black smoke comes out exhaust. 41 only shows up after trying to start the engine.No other active codes. I tried another good ecm, replaced both timing senors, and I even put a brand new sensor harness. I think the timing gears may have a problem, but what little I can see without the front structure off doesn't appear to be chipped.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 1 year ago.
Good day this code pertains to your srs sensor which is off your cam.and the trs sensor that's off the crank the code indicates the srs is responding and not the trs
Customer: replied 1 year ago.
Could a faulty crankshaft cause the lack of trs ?
Expert:  go-west.. replied 1 year ago.
Yes sir it's a good start more important check the pins at that sensor
Customer: replied 1 year ago.
I will check them again, but a brand new harness should have good pins.
Expert:  go-west.. replied 1 year ago.
yes sounds like it

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