Fuel Level Sensor (Sending Unit) Wiring

[Funkychateau]

2014 1500 Crew Cab 2WD 5.7

I need to access the two wires leading to my fuel-level sending unit. What is the most convenient place? If bundled, I’d also need the colors to identify.

I’m going to place a resistance across the wires to simulate a properly-working sending unit. This will allow me to clear the stored fault code and then run the UTDP to clear the permanent code, and get my truck through state inspection.

A few months ago the sending unit worked in part of its range and I expected to clear the codes after fueling to the correct level. But now it has gone completely open-circuit.

 

[Tach_tech]

Why not just replace the level sending unit?

 

[Funkychateau]

Because it’s a lot of work for something non-essential. I just reset one of my trip meters each time I fill up.

I’ll probably drop the tank and replace the fuel pump module (which also gets me a new sending unit) around 250K miles or so. I don’t have access to a lift, and don’t want to do this twice.

Also, the sending unit costs an unreasonable percentage of the complete fuel module. So much that I’d feel abused if I purchased it separately. If anyone knows where to buy the sending unit for 35 or 40 bucks, I’ll change my plans.

So, are you really a tech, can you help with the wire identification?

 

[Tach_tech]

The level sending sense and return should be a black wire and a blue with a white tracer. The easiest spots would be at the bcm, or the in-line connector by the driver side fender well. With a constant resistance the cel will come on again after awhile, but it might stay off long enough to do what you want.

 

[Aaron Blount]

 

[PoMansRam]

I never thought about it, but I live in NY and you won't pass your yearly mandatory state inspection if the check engine light is on. I thought it was dependent on what the actual code is and if it is emissions related, but maybe not. It's been close to 20yrs since I had an issue because I waste money every few years on new vehicles. LOL

 

[Funkychateau]

Thanks, everyone! I’ll be taking a look at this over the coming weekend.

 

[Livinalittle]

Why not just replace the level sending unit?

Agreed. It’s worth it just for the fancy new socket.