29F1 Fuel Pump Plausibility

[Shane303]

I am getting 29F1 Fuel pump plausibility code with half engine light. (this code only)
Being unable to find much information about the code, I am hoping for some insight.

Here are some logs when the code appears. Notice how the HPFP stays high while the trims are pulling fuel. When the 29F1 code pops, it disables the HPFP. Is this a tuning thing, or am I replacing my HPFP after 20k miles?

http://datazap.me/u/skampstra/29f1?log=0&data=13-22-23
http://datazap.me/u/skampstra/29f1?log=1&data=13-22-23
http://datazap.me/u/skampstra/log-1490276462?log=0&data=13-19-20-22-23-24-25
http://datazap.me/u/skampstra/log-1490276462?log=1&data=13-22-23-24-25

***UPDATE***
It was the tune causing the 29F1 code. (Luckily)

 

[doublespaces]

Ahh i see, Im gonna try fuel pressure sensors and then Ekp, i find it weird that the fan goes on full blast.

Does your car go into limp mode or shut down?

 

[Jon1998]

Does your car go into limp mode or shut down?

Yes, will idle fine for a second and the limp mode and then shut off

 

[doublespaces]

Yes, will idle fine for a second and the limp mode and then shut off

I also think it may be related to hpfp not being able to keep up with rail pressure target from the tune. Not sure how that works exactly but I think if it dips too far down for a certain area of a table then it tosses this error. Just speculation.

 

[Jon1998]

I also think it may be related to hpfp not being able to keep up with rail pressure target from the tune. Not sure how that works exactly but I think if it dips too far down for a certain area of a table then it tosses this error. Just speculation.

I had read this on another thread as well. I figured I would do maintenance on my fueling system, since I got my hands on another pump and new sensors & already have upgraded low pressure.

So if the sensors don’t work I’ll look into the tune and see where I’m at then. I’ll update tomorrow I should be getting the sensors installed.

 

[Sikh335]

I had read this on another thread as well. I figured I would do maintenance on my fueling system, since I got my hands on another pump and new sensors & already have upgraded low pressure.

So if the sensors don’t work I’ll look into the tune and see where I’m at then. I’ll update tomorrow I should be getting the sensors installed.

Any update after the sensors?

 

[STE92]

@V8bait exactly what's happening

 

[V8bait]

@V8bait exactly what's happening

?

 

[Dandy.93]

I had read this on another thread as well. I figured I would do maintenance on my fueling system, since I got my hands on another pump and new sensors & already have upgraded low pressure.

So if the sensors don’t work I’ll look into the tune and see where I’m at then. I’ll update tomorrow I should be getting the sensors installed.

I’m having the same problem right now. Did you ever find the issue?