po18b and po62a

[josh cottingham]

Hi, I've come in hopes of some help. I have a 2013 ram 1500 5.7, with 180000 miles. the truck is randomly stalling while coming to a stop, but it happens very infrequently, for example before today the last time it happened was 6 weeks ago. when it stalls out it will start back up and run fine, it has no cel but does give a po18b and po62a code. while chasing a solution, I have replaced the fuel pump, fuel pump control module, fuel pressure sensor, and crankshaft position sensor. I have recently cleaned the throttle body and it has new plugs. when I replaced the control module, I cleaned the electrical connection as well. the truck runs fine with the exception of a slightly rough idle, no noticeable performance issues at all. no one that I have taken to can do anything without being able to replicate the problem, but I did have a mechanic tell me today to check the pcm connections for corrosion which I will do tomorrow. is there anything else I should be looking into? could it be in the TIPM? or somewhere else? any help would be greatly appreciated

thank you in advance

 

[Ken226]

Hi, I've come in hopes of some help. I have a 2013 ram 1500 5.7, with 180000 miles. the truck is randomly stalling while coming to a stop, but it happens very infrequently, for example before today the last time it happened was 6 weeks ago. when it stalls out it will start back up and run fine, it has no cel but does give a po16b and po62a code. while chasing a solution, I have replaced the fuel pump, fuel pump control module, fuel pressure sensor, and crankshaft position sensor. I have recently cleaned the throttle body and it has new plugs. when I replaced the control module, I cleaned the electrical connection as well. the truck runs fine with the exception of a slightly rough idle, no noticeable performance issues at all. no one that I have taken to can do anything without being able to replicate the problem, but I did have a mechanic tell me today to check the pcm connections for corrosion which I will do tomorrow. is there anything else I should be looking into? could it be in the TIPM? or somewhere else? any help would be greatly appreciated

thank you in advance

Where are you getting those codes? What are the definitions for them?

I looked them up in my 2013 Ram 1500 5.7 Hemi factory service manual, and neither of them exist in the manual.

The P016-00 codes:



and for the P062A code:



When I search for P016b on google, the AI gets a little confused too:


What scan tool is giving you these codes? Did you have a local shop or Auto Zone or something scan it for you? Could you be misreading the scan tool? Is it one of those little cheap parts store code readers?




In order to suggest some diagnostic tests to actually figure out what is going on, some accurate information is needed. Given those two codes and their standard OBD2 meanings, I can see why you replaced the fuel pump. But, it seems possible that whatever scan tool gave you those codes could have cost you some unnecessary money.



If I took those two codes at face value and assume p016b means that the PCM is adding fuel to the fuel trims up to the limits, and that p062a shows a circuit high in the fuel pump wiring, my first course of action would be crawl under the truck and with my scan tool, turn the fuel pump on/off a few times to make sure it works. Then 2nd, connect a gauge to the fuel rail to measure the fuel pressure.

 

[josh cottingham]

Thank you for the response. I apologize I accidentally put po16 but it actually po18. I just have an inexpensive code reader, but before I changed the pump I did check the pressure at the rail. It hat 53 psi with the key on and 51 to 52 at idle. The spec I found online for states that it should have 58 psi plus or minus 2. That’s what led me to change the pump. I currently have right at 58 psi. I haven’t been to check when is has issues because it only happens momentarily

 

[Ken226]

I still can't find a p018b, nor any kind of p018 in the service manual.

You aren't leaving off a digit or something? It's no p0018, or p0108?

Maybe the factory service manual is junk?

And from your original post, P062A? Also, no such thing in the factory manual.



How bout an experiment. Run by your local Auto Zone or Oreilly's and have them scan your truck and give you a printout. If your scan tool codes doesn't match theirs, take yours to the range next time you go shooting and hang it up on a target.

If theirs give the same codes, perhaps i'll revisit my confidence in the factory service manual.

 

[Ken226]

The best I can find, P018b refers to the fuel rail pressure sensor:

It's a really simple circuit that shares it's power supply with the cam position sensor




It should be pretty simple to verify 5v at the yl/pk wire at the connector, then verify the integrity of the signal and ground wires between the sensor and pcm.

Once those are verified, replace the fuel pressure sensor.



Of course, that's assuming that P018b is the code you have, and that Chrysler just forgot to put it in the manual, or something.


The Google derived definition of p062a (since it isn't in the manual) shows to be a simple mismatch between what the pressure sensor is reporting and what the PCM is asking the fuel pump to deliver. It would also stand to reason that if that pressure sensor was bad, there would be a mismatch between the reported pressure from the sensor and the requested pressure.

So, that code also points to a bad sensor. Good Luck! As I seem to remember there being some drama with that sensor having been discontinued. I seem to remember the appropriate repair being a newer style sensor that has to be cut/spliced and made to work.

If you do a search on this forum, you'll find several threads on this modification.

 

[Ken226]

In case you run into this issue. I'd believed it to only be the 4.7l guys who ran into this problem, but later i saw reports of some guys with early 2013 Hemi trucks that still used the older style, discontinued, sensor that the 4.7 trucks used.

So, just in case, this guy's solution seem to work. The fuel line fittings can be had on Amazon for about fairly cheap.

4.7 Fuel Pressure sensor

JustAwomen, thank you for your information. Now that is a helpful post. That is definitely something that I may try. Do you happen to know the fuel fitting size of the "red" end? I've ordered some different sized fittings hoping one will be the right size. Thanks again for your information and...

www.ramforum.com

Do your own research, but i think these are the correct size for our trucks,

Amazon.com: Dorman 800-085 Fuel Line Quick Connector That Adapts 3/8 In. Steel To 5/16 In. Nylon Tubing, 2 Pack Universal Fit : Automotive

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