I had an 0456 code on my dash. I searched high and low and the only thing left was to drop the fuel tank and check the hoses on top of the tank.

Sure enough, the nipple on the passenger side tank pump that connects to the driver side tank pump was broken. Not apart, just broken. kind of like a dislocated finger. I couldn't see dumping a whole bunch of money into it, so I JB welded the nipple, used wooden match sticks for support and covered the whole thing with another golf ball sized wad of JB.

So my question is: Which pump is which (Secondary vs Primary), what does the hose that goes from tank to tank do, how long is that JB weld going to last? I heard gas tears it up.

On a second note, I'm going to need to replace the passenger side eventually because of the broken nipple. Also, when the gas gauge gets below 1/2 full it bounces up and down between 1/2 and empty. Is that the only one with the float assembly, or do they both have a float? The pictures I look at don't show much, or they show it with and without the float. It sounds like I may have to replace both of them.... not looking forward to taking the fuel tank out of the car again.

Thanks, Jim

 

Probably help if I told you it was an 05 Pacifica.....

 

We had similar P0456 code. Eventually had smoke test and had to replace fuel pump module because of the broken plastic nipple crap.. I was in close to $1000 before it was over with. Just the smoke test, dropping the tank, remove and replace pump was around $800 as I recall. Car was around 75,000 miles. 06 Pacifica.

 

Lucky for me I was leaving for a long road trip in less than 2 days and couldn't delay the trip for the dealer to take my money.

I decided the proverbial smoking gun was the fuel tank in one way or another. I removed the fuel tank and sure enough it was a broken nipple on the fuel pump.

Like the post says I fixed it, drove to San Fran and back to Tucson, via LA and San Diego. I've also driven the car to Arkansas twice.

All in all it cost me time, and $8 for the JB weld. $800 is ridiculous…. It took 20 minutes to remove the exhaust and fuel tank. Less than that to install it because I had help.

 

thanks for closing the loop.