Ram cp4 failure thread - Post all CP4 failures here DO NOT start a new thread.

[akamac]

I'm driving a 2022 1500 Hemi Big Horn loaner. Going on three weeks. No word or callback from Dealer.

 

[mboudoin]

Broke down in May for 35 days and supposedly had the CP4 replaced with recall kit about 9 hours from home. Last 2 weeks and is now going on 35 days with injectors, fuel lines alot of sensors DPF and Cat replaced and the truck is still throwing codes when running at higher rpms. 22k miles on a 2020 Ram 2500

Mark
2020 Ram 2500 with 22k miles

 

[akamac]

I got a call yesterday and they are unable to diagnose problem. They may go new engine route but have to wait for Star Tech to approve.
Not taking the fifth-wheel to Washington with a 1500. Not a happy guy right now, no time frame on repair.

 

[H3LZSN1P3R]

Anybody have any suggestions on how I can get my recall done on my 2020 ram 3500 HO Aisin? I've been waiting for months and I'm on a wait list at 2 dealers in Phoenix? Any suggestions/recommendations appreciated.

Wait inline like everyone else?

 

[richardslivestock]

Just joined the forum to start sharing my Cp4 fiasco.

2020 RAM 2500 Tradesman, purchased Oct, 2020. 39,160 miles. Was on the waitlist at the local dealer for the pump for the last 5 months.

I use my truck as a primary vehicle, most of my work days are from home, but on weekends we show livestock across the state. On Friday, we were headed up to Prescott, AZ with a 30 ft gooseneck livestock/living quarters trailer lightly loaded with a handful of show goats (yes, it's a thing). About 20 miles out of Prescott the truck sputtered, died and became a "dead stick" after coming off a light. Restart attempts had the truck turning over like a madman, but no ignition. 100% road diagnosed as a fuel delivery issue.
I have the MOPAR extended warranty, and called roadside. After 15 minutes of me yelling at the automated prompts, i finally got a real person. The agent heard me out, put me on hold for an extended period of time, and came back to say "good news, the truck and trailer tow is covered, we are dispatching a tow - but we cannot move live animals for liability purposes" Hung up with her after getting the tow confirmation, and tracked down someone to move the goats for me (off the side of a busy highway). Then the 60 min wait for the tow service began.
10 mins before the tow was set to show up, got a call from the driver that he was a few miles out, and wanted details of how I was oriented in the road. I told him about the truck and trailer, he stopped me and said "Trailer?? we dont have a work order for a trailer" After talking to his dispatch, the company had no method to move my trailer - back to Roadside we went

More hold time, more automated systems to yell at, and a supervisor later, I THOUGHT I had another tow set up. BUT I was informed that the trailer tow is NOT actually covered. Worried what that cost would be out of pocket, I got back on the phone and found an acquaintance in the business that would come get the trailer for a 12-pack. Called Roadside back (again) just to let them know that the trailer won't be part of the tow, in the hope of avoiding any additional charges. The tow time estimate was over an hour.

With a few minutes left in the hour, I called the number for the tow company, and found out that they were ANOTHER 1.5 hours out. Through phone calls, and back and forth, we found out that the "supervisor" on roadside cancelled out the tow all-together when I called back about the trailer, then set it back up a few minutes later. HOWEVER, during that gap the tow company got a different call, in the opposite direction - so i had to wait. All in all, 5.5 hours from breakdown, to drop-off at a service center.
Fast forward to the morning, and some Uber rides later, I was at the service counter trying to find out what the plan was. Shortening the story here, all evidence was pointing to the fuel pump, and the immediate quote was 60-90 days "easy" (found out later, 7 months was reality).

With everything on the table, the situation forced me to make decision - continue to pay for a truck that is waiting for repairs, and is unusable, while stranding my trailer in Prescott and/or begging someone to move it back home for me (and trying to figure out what to use for a daily), or buy a new truck on the spot. The dealer (York, in Prescott) offered me a fair trade for the busted truck (7k less than I paid for it 22 months ago), and happened to have a 2500 bighorn on the lot (literally, the ONLY new HD truck in Prescott). We made a "deal" (horrid time to buy a vehicle, no one will budge on price) and I drove a new one off the lot.

As an aside, there was extra cost for me as the new truck did not have the tow prep group. I was able to find a B&W flip over at a trailer place in town for $670, and York installed it for me at no cost. Still agitating as I had the same hitch in the old truck, that I paid out of pocket for as well.

Here I am, a couple of days later still fuming. No real complaints about the new truck, or the deal (I figure I am the one that signed the deal, so on me if I didnt like it). Don't love the fact that the new truck does not have the power folding mirrors, and that I am on the ultra-crappy stock tires (and not looking forward to putting up more cash to fix these things)

I have a call into FCA, and waiting for a specialist call back. I am asking they cover the cost of the power mirror install, and possibly the hitch. I'll be luck to get a keychain.

Question for you all - what would you have done?

 

[red]

Just joined the forum to start sharing my Cp4 fiasco.

2020 RAM 2500 Tradesman, purchased Oct, 2020. 39,160 miles. Was on the waitlist at the local dealer for the pump for the last 5 months.

I use my truck as a primary vehicle, most of my work days are from home, but on weekends we show livestock across the state. On Friday, we were headed up to Prescott, AZ with a 30 ft gooseneck livestock/living quarters trailer lightly loaded with a handful of show goats (yes, it's a thing). About 20 miles out of Prescott the truck sputtered, died and became a "dead stick" after coming off a light. Restart attempts had the truck turning over like a madman, but no ignition. 100% road diagnosed as a fuel delivery issue.
I have the MOPAR extended warranty, and called roadside. After 15 minutes of me yelling at the automated prompts, i finally got a real person. The agent heard me out, put me on hold for an extended period of time, and came back to say "good news, the truck and trailer tow is covered, we are dispatching a tow - but we cannot move live animals for liability purposes" Hung up with her after getting the tow confirmation, and tracked down someone to move the goats for me (off the side of a busy highway). Then the 60 min wait for the tow service began.
10 mins before the tow was set to show up, got a call from the driver that he was a few miles out, and wanted details of how I was oriented in the road. I told him about the truck and trailer, he stopped me and said "Trailer?? we dont have a work order for a trailer" After talking to his dispatch, the company had no method to move my trailer - back to Roadside we went

More hold time, more automated systems to yell at, and a supervisor later, I THOUGHT I had another tow set up. BUT I was informed that the trailer tow is NOT actually covered. Worried what that cost would be out of pocket, I got back on the phone and found an acquaintance in the business that would come get the trailer for a 12-pack. Called Roadside back (again) just to let them know that the trailer won't be part of the tow, in the hope of avoiding any additional charges. The tow time estimate was over an hour.

With a few minutes left in the hour, I called the number for the tow company, and found out that they were ANOTHER 1.5 hours out. Through phone calls, and back and forth, we found out that the "supervisor" on roadside cancelled out the tow all-together when I called back about the trailer, then set it back up a few minutes later. HOWEVER, during that gap the tow company got a different call, in the opposite direction - so i had to wait. All in all, 5.5 hours from breakdown, to drop-off at a service center.
Fast forward to the morning, and some Uber rides later, I was at the service counter trying to find out what the plan was. Shortening the story here, all evidence was pointing to the fuel pump, and the immediate quote was 60-90 days "easy" (found out later, 7 months was reality).

With everything on the table, the situation forced me to make decision - continue to pay for a truck that is waiting for repairs, and is unusable, while stranding my trailer in Prescott and/or begging someone to move it back home for me (and trying to figure out what to use for a daily), or buy a new truck on the spot. The dealer (York, in Prescott) offered me a fair trade for the busted truck (7k less than I paid for it 22 months ago), and happened to have a 2500 bighorn on the lot (literally, the ONLY new HD truck in Prescott). We made a "deal" (horrid time to buy a vehicle, no one will budge on price) and I drove a new one off the lot.

As an aside, there was extra cost for me as the new truck did not have the tow prep group. I was able to find a B&W flip over at a trailer place in town for $670, and York installed it for me at no cost. Still agitating as I had the same hitch in the old truck, that I paid out of pocket for as well.

Here I am, a couple of days later still fuming. No real complaints about the new truck, or the deal (I figure I am the one that signed the deal, so on me if I didnt like it). Don't love the fact that the new truck does not have the power folding mirrors, and that I am on the ultra-crappy stock tires (and not looking forward to putting up more cash to fix these things)

I have a call into FCA, and waiting for a specialist call back. I am asking they cover the cost of the power mirror install, and possibly the hitch. I'll be luck to get a keychain.

Question for you all - what would you have done?

Bet the dealer gets it fixed faster now that they own the truck. They'll screw some other person out of the pump kit that was ordered for their truck and fix your old truck so they can sell it quickly...it's all about the money.

 

[RVTRKN]

Just joined the forum to start sharing my Cp4 fiasco.

2020 RAM 2500 Tradesman, purchased Oct, 2020. 39,160 miles. Was on the waitlist at the local dealer for the pump for the last 5 months.

I use my truck as a primary vehicle, most of my work days are from home, but on weekends we show livestock across the state. On Friday, we were headed up to Prescott, AZ with a 30 ft gooseneck livestock/living quarters trailer lightly loaded with a handful of show goats (yes, it's a thing). About 20 miles out of Prescott the truck sputtered, died and became a "dead stick" after coming off a light. Restart attempts had the truck turning over like a madman, but no ignition. 100% road diagnosed as a fuel delivery issue.
I have the MOPAR extended warranty, and called roadside. After 15 minutes of me yelling at the automated prompts, i finally got a real person. The agent heard me out, put me on hold for an extended period of time, and came back to say "good news, the truck and trailer tow is covered, we are dispatching a tow - but we cannot move live animals for liability purposes" Hung up with her after getting the tow confirmation, and tracked down someone to move the goats for me (off the side of a busy highway). Then the 60 min wait for the tow service began.
10 mins before the tow was set to show up, got a call from the driver that he was a few miles out, and wanted details of how I was oriented in the road. I told him about the truck and trailer, he stopped me and said "Trailer?? we dont have a work order for a trailer" After talking to his dispatch, the company had no method to move my trailer - back to Roadside we went

More hold time, more automated systems to yell at, and a supervisor later, I THOUGHT I had another tow set up. BUT I was informed that the trailer tow is NOT actually covered. Worried what that cost would be out of pocket, I got back on the phone and found an acquaintance in the business that would come get the trailer for a 12-pack. Called Roadside back (again) just to let them know that the trailer won't be part of the tow, in the hope of avoiding any additional charges. The tow time estimate was over an hour.

With a few minutes left in the hour, I called the number for the tow company, and found out that they were ANOTHER 1.5 hours out. Through phone calls, and back and forth, we found out that the "supervisor" on roadside cancelled out the tow all-together when I called back about the trailer, then set it back up a few minutes later. HOWEVER, during that gap the tow company got a different call, in the opposite direction - so i had to wait. All in all, 5.5 hours from breakdown, to drop-off at a service center.
Fast forward to the morning, and some Uber rides later, I was at the service counter trying to find out what the plan was. Shortening the story here, all evidence was pointing to the fuel pump, and the immediate quote was 60-90 days "easy" (found out later, 7 months was reality).

With everything on the table, the situation forced me to make decision - continue to pay for a truck that is waiting for repairs, and is unusable, while stranding my trailer in Prescott and/or begging someone to move it back home for me (and trying to figure out what to use for a daily), or buy a new truck on the spot. The dealer (York, in Prescott) offered me a fair trade for the busted truck (7k less than I paid for it 22 months ago), and happened to have a 2500 bighorn on the lot (literally, the ONLY new HD truck in Prescott). We made a "deal" (horrid time to buy a vehicle, no one will budge on price) and I drove a new one off the lot.

As an aside, there was extra cost for me as the new truck did not have the tow prep group. I was able to find a B&W flip over at a trailer place in town for $670, and York installed it for me at no cost. Still agitating as I had the same hitch in the old truck, that I paid out of pocket for as well.

Here I am, a couple of days later still fuming. No real complaints about the new truck, or the deal (I figure I am the one that signed the deal, so on me if I didnt like it). Don't love the fact that the new truck does not have the power folding mirrors, and that I am on the ultra-crappy stock tires (and not looking forward to putting up more cash to fix these things)

I have a call into FCA, and waiting for a specialist call back. I am asking they cover the cost of the power mirror install, and possibly the hitch. I'll be luck to get a keychain.

Question for you all - what would you have done?

The CP4.2 is a ticking time bomb, at least you had a 2020 that was in the cue. For those of us that have a 2019, we are in a worse spot. I have a 4K mile trip, with 30K on the odometer, and can't get the CP4.2 done. Like you posted, a 3 month turn around on repair, if it fails, if your lucky. If my truck fails while pulling my boat back from Vegas, I'm going to be in a pickle. Rental trucks don't allow towing, while I'm 2K miles away, I can get the truck to a dealer, but what do I do about my boat. I'll have to have the wife drive her Highlander, which can tow the boat, to come and get me. I wouldn't think twice about towing the boat with the Highlander, that has the tow prep option, but only to and from the lake, but crossing the country on the interstate is something I won't do, unless the CP4.2 fails then I won't have a choice.

 

[Great White North Eh]

Makes a guy feel like burning them to the ground when she takes a dump.

 

[H3LZSN1P3R]

Makes a guy feel like burning them to the ground when she takes a dump.

Id be 1/2 inclined to do the same…

 

[flan]

NFN, I haven’t seen many failures lately, it seemed months ago a new one was failing each day. maybe the bad ones have already taken a dump.

 

[H3LZSN1P3R]

NFN, I haven’t seen many failures lately, it seemed months ago a new one was failing each day. maybe the bad ones have already taken a dump.

The worst ones maybe but they are all “bad” lol

 

[flan]

The worst ones maybe but they are all “bad” lol

This is true, but I am somewhat thankful I got the callback from the dealer cancelling my appointment way early on. I most likely would of been the dealers first to complete. There wasn’t much data on how the completed recall ran, and with the programming issues like constant regen and other quirks, maybe by the time the 19 tune will be released it will be closer to perfect?

 

[H3LZSN1P3R]

This is true, but I am somewhat thankful I got the callback from the dealer cancelling my appointment way early on. I most likely would of been the dealers first to complete. There wasn’t much data on how the completed recall ran, and with the programming issues like constant regen and other quirks, maybe by the time the 19 tune will be released it will be closer to perfect?

Perhaps but i doubt it they just seem to make it work with no refining but hey in 2024-25 they may start doing the 19s after the backlog of 20s are finished….

 

[mboudoin]

Curious on how many here have demanded and received a buy back? Latest is now supposedly a life pump after changing damn near everything since May and quickly approaching a combined 90 days total. At this point I want out of the truck, but I am not willing to take a loss.

 

[Randyhut]

Just got my truck back from dealer Wed. evening and so far it seems to be running much better! My truck was missing and bucking after the recalls were all done - transmission first (problem missing started shortly after) then the wipers and some other program update in April, truck continued to miss until mid July when they did the pump recall Complete fuel system replaced (last). Truck continued to miss and they just replaced the Mass Air Flow sensor and the EGR valve along with programming per TSB 18-101-22. SO far SO GOOD! MAYBE they got it fixed. Any of you guys with the recall done and ISSUES, look at TSB 18-101-22 and make sure the dealer has applied it.

 

[readychassis]

I'll throw my 2 cents into this since I'm part of the CP4 club.

I purchased the Truck as my first new vehicle in over 30 years, and it was my 45th birthday present (or shall I say, the down payment was the gift from the wife - she let me spend my own saved money) - I acquired my RAM in August of 2020. I LOVE my Truck; I needed it for business since we operate a race team and build Mopar Race cars (the company is called ReadyChassis). I'm a diehard Mopar fan, and when I had the means and the ability to acquire a new RAM Dually to tow my trailer(s) around the country, my pick was a brand new 2020 RAM 3500 Dually Cummins HO Sport. Its the best vehicle I've ever owned, and I've only had one recall since ownership (the Lug recall)

So here is the story. I filled up with a diesel tank on the morning of August 27th, and about an hour away (on side roads near my race shop), the Truck started to sputter and then died. Luckily, I wasn't towing and wasn't far from my property. I called FCA for the tow, and they took 4 hours to get me a truck, and when they did, it wasn't large enough (they sent my vehicle with a flatbed - the irony). Anyway, I was lucky as I was a mile from my shop. I decided to grab my other Truck and get it home.

On August 30th, I called for another tow, and they sent the wrong Truck AGAIN. But, an hour later, a full-size HS flatbed showed up, and they took it away. The dealership I requested is the one nearest to my shop, which is Castle Jeep Dodge in Naperville,

One week passes by, and my phone calls go unanswered. The Truck is on their lot, right where the Truck dropped it. So I stopped in on Saturday, September 3rd, to speak with a Human being. They were waiting for their diesel mechanic to get a chance to look at it. On September 9th, I got a phone call that it was a CP4 failure, and they are waiting on the parts.

I was able to get the parts that they are using in the repair; if any of you are/may be interested:

CP4 Failure replacement:

• CSRLY-782AA - Fuel Kit (retails for $1,225) (IN STOCK, BUT ALLOCATED TO DEALERS FIRST)
• CSRLY-781AA - Module Kit (retails for $468) (OUT OF STOCK - This is the recall part if you don't have a pump failure)
• 68231617AF - Fuel Tank Replacement

Mopar told me that dealerships could only order the recall-based parts once every seven days (so they don't exhaust supply). I called my buddies over at Mopar Parts distribution, and they noted that it should NOT take longer than five days to get an OEM part if that part is "stocked".

When a vehicle gets the recall, the part they are replacing is the Module Kit. When your Truck is towed in because of the failure, they replace all three parts listed because of potential contamination of the fuel system.

At the date of this writing, the CSRLY-782A is being restocked at distribution centers on September 30th (2022)

From what I can tell, the Fuel kit is the part hanging up the supply chain. They've given me a rental car and said they have yet to determine how long it will take. Thankfully racing season is over, and the rental car has no mileage limit - so in my case, I can be more patient than most of us. But my 45' gooseneck isn't going anywhere for the rest of this season...

Keep you posted on where it goes from here. As of this writing, I've not had my Truck for almost a month.

 

[MEGA HO]

Some just ain't lucky I guess. I deal with problems as they arise so I was using my truck and not thinking much about the CP4 time bomb under the hood.
Took my truck on a trip to an Arctic Ocean, about 4500 miles round trip from where I live. I would have been royally screwed if my CP4 grenaded while I was so far North away from everywhere.
Thankfully nothing happened in over 25,000 miles I've driven it, before I finally got a CP3.3 installed a week ago.

 

[Ram???]

I'll throw my 2 cents into this since I'm part of the CP4 club.

I purchased the Truck as my first new vehicle in over 30 years, and it was my 45th birthday present (or shall I say, the down payment was the gift from the wife - she let me spend my own saved money) - I acquired my RAM in August of 2020. I LOVE my Truck; I needed it for business since we operate a race team and build Mopar Race cars (the company is called ReadyChassis). I'm a diehard Mopar fan, and when I had the means and the ability to acquire a new RAM Dually to tow my trailer(s) around the country, my pick was a brand new 2020 RAM 3500 Dually Cummins HO Sport. Its the best vehicle I've ever owned, and I've only had one recall since ownership (the Lug recall)

So here is the story. I filled up with a diesel tank on the morning of August 27th, and about an hour away (on side roads near my race shop), the Truck started to sputter and then died. Luckily, I wasn't towing and wasn't far from my property. I called FCA for the tow, and they took 4 hours to get me a truck, and when they did, it wasn't large enough (they sent my vehicle with a flatbed - the irony). Anyway, I was lucky as I was a mile from my shop. I decided to grab my other Truck and get it home.

On August 30th, I called for another tow, and they sent the wrong Truck AGAIN. But, an hour later, a full-size HS flatbed showed up, and they took it away. The dealership I requested is the one nearest to my shop, which is Castle Jeep Dodge in Naperville,

One week passes by, and my phone calls go unanswered. The Truck is on their lot, right where the Truck dropped it. So I stopped in on Saturday, September 3rd, to speak with a Human being. They were waiting for their diesel mechanic to get a chance to look at it. On September 9th, I got a phone call that it was a CP4 failure, and they are waiting on the parts.

I was able to get the parts that they are using in the repair; if any of you are/may be interested:

CP4 Failure replacement:

• CSRLY-782AA - Fuel Kit (retails for $1,225) (IN STOCK, BUT ALLOCATED TO DEALERS FIRST)
• CSRLY-781AA - Module Kit (retails for $468) (OUT OF STOCK - This is the recall part if you don't have a pump failure)
• 68231617AF - Fuel Tank Replacement

Mopar told me that dealerships could only order the recall-based parts once every seven days (so they don't exhaust supply). I called my buddies over at Mopar Parts distribution, and they noted that it should NOT take longer than five days to get an OEM part if that part is "stocked".

When a vehicle gets the recall, the part they are replacing is the Module Kit. When your Truck is towed in because of the failure, they replace all three parts listed because of potential contamination of the fuel system.

At the date of this writing, the CSRLY-782A is being restocked at distribution centers on September 30th (2022)

From what I can tell, the Fuel kit is the part hanging up the supply chain. They've given me a rental car and said they have yet to determine how long it will take. Thankfully racing season is over, and the rental car has no mileage limit - so in my case, I can be more patient than most of us. But my 45' gooseneck isn't going anywhere for the rest of this season...

Keep you posted on where it goes from here. As of this writing, I've not had my Truck for almost a month.

I am in the process of getting the new pump installed at the dealer.
Truck is deleted and tuned. I told them not to flash the ECU.

They said it is the first one for them and cannot guarantee it would be 100% .

In looking at replacement kits, it says no tuning is required.

Question, has anyone had experience replacing the pump without re-flashing the ECU?

Thanks

I will update this after getting the truck back (hopefully today, they have had it for a full day now, after being pre-scheduled for 60days...)

 

[Brutal_HO]

I am in the process of getting the new pump installed at the dealer.
Truck is deleted and tuned. I told them not to flash the ECU.

They said it is the first one for them and cannot guarantee it would be 100% .

In looking at replacement kits, it says no tuning is required.

Question, has anyone had experience replacing the pump without re-flashing the ECU?

Thanks

I will update this after getting the truck back (hopefully today, they have had it for a full day now, after being pre-scheduled for 60days...)

They have to flash it. You can reflash your tune in the parking lot after they're done. Many have done so.

 

[H3LZSN1P3R]

I am in the process of getting the new pump installed at the dealer.
Truck is deleted and tuned. I told them not to flash the ECU.

They said it is the first one for them and cannot guarantee it would be 100% .

In looking at replacement kits, it says no tuning is required.

Question, has anyone had experience replacing the pump without re-flashing the ECU?

Thanks

I will update this after getting the truck back (hopefully today, they have had it for a full day now, after being pre-scheduled for 60days...)

Well their ecm flash is irrelevant as you would be flashing the delete tune and overwriting the dealer flash anyway. My tuner told me to try and tell the dealer to not flash it as its just one less thing i have to do when i pick the truck up after