P0087 on RAM: How to Diagnose & Fix
Fuel Rail/System Pressure - Too Low
2 RAM models · 3 documented issues · 3 critical · $50-$12,000 repair
P0087 on RAM by model: symptoms, diagnosis and fix
The 2019+ RAM 2500 with the 6.7L Cummins diesel uses a Bosch CP4.2 high-pressure fuel injection pump that is prone to catastrophic self-destruction. The CP4.2 relies on diesel fuel for internal lubrication, and any contamination, water intrusion, or low fuel levels cause the pump to disintegrate, sending metal shavings throughout the entire fuel system. This contaminates fuel injectors ($500+ each x6), fuel rails, fuel lines, and the fuel tank, requiring a complete fuel system replacement costing $8,000-12,000+. The previous-generation CP3 pump was far more reliable. Multiple class-action lawsuits have been filed against Stellantis/Bosch.
Common Symptoms
- Engine no-start or sudden loss of power
- Metallic debris in fuel filter
- Loud knocking or grinding from fuel pump area
- Check engine light with fuel pressure codes (P0087, P0088, P228D)
- Excessive cranking before starting
- Fuel filter clogging frequently
- White or black smoke from exhaust
How to Fix
If the CP4.2 has failed, the ENTIRE fuel system must be replaced or thoroughly cleaned: fuel pump, all 6 injectors (Bosch 0445120413), fuel rails, high-pressure fuel lines, fuel tank (or professionally cleaned), and fuel filter. Total cost: $8,000-12,000+ at dealer. Prevention: Install a FASS or AirDog lift pump system ($800-1,200) that provides additional fuel filtration and water separation before the CP4.2. Some owners proactively replace the CP4.2 with a CP3 conversion kit ($3,000-4,500) from S&S Diesel Motorsport or Fleece Performance for permanent reliability.
Sources for this issue (1)
The TIPM controls most electrical functions and commonly fails, causing erratic behavior. The fuel pump relay inside the TIPM is particularly prone to failure, resulting in no-start conditions. Horn honking randomly, headlights flickering, and wipers activating on their own are common symptoms.
Common Symptoms
- No start condition
- Fuel pump not priming
- Random horn honking
- Headlights flickering
- Wipers activating randomly
- Battery drain
- Multiple warning lights on dash
How to Fix
For fuel pump relay failure: Install an external bypass relay kit ($30-50 DIY) to power fuel pump directly. For complete TIPM replacement: Use remanufactured unit ($400-600) or new OEM ($800-1,200). Some electrical shops can rebuild existing TIPM for $200-400. Warranty lawsuit settlements may cover repairs for some VINs.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- MAKS 04692123 TIPM mail-in repair service
2009 Dodge Ram 1500 original module with base number 04692123 only; match the complete label before ordering. Other 2009 TIPM families need their own service.
- MAKS 04692194 TIPM mail-in repair service
2010 Dodge Ram 1500/2500 original TIPM base number 04692194 as explicitly listed; confirm full suffix, engine, drive and options.
- MAKS 04692319 TIPM repair/replacement service
2011 Dodge Ram 1500 gasoline variants using base number 04692319; match complete label and choose repair or VIN programming as appropriate. Fitment/availability: Direct module/service page live at review
- MAKS 68089323 TIPM mail-in repair service
2012 Dodge Ram 1500 gasoline/flex original TIPM base number 68089323; confirm complete suffix, engine and options.
- MAKS 68089578 TIPM/PDC mail-in repair service
2013-2014 Ram 1500 original module 68089578AA-AI family; enter VIN and original part number and do not apply to other 3.6L/diesel/options without a label match.
- Genuine Mopar 68269523AD external fuel-pump-relay wiring kit
Selected 2011 Ram 1500 4.7L/5.7L 4WD configurations shown by the OE catalog; confirm VIN and wiring instructions. Do not generalize to 2012-2018.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- WarningThis is a high-severity issue - ignoring it can lead to costly repairs or safety concerns. Address it promptly.
- TipConsider OEM parts for critical components like sensors and electrical parts - aftermarket can be unreliable
- TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
Sources for this issue (6)
- RamForumz: TIPM Fuel Pump Failure, Repair, & Subsequent Problemsforum
- RamForum: Fuel pump or relay (TIPM) problem how to tell?forum
- RamForum: RAM TIPM FUEL PUMP RELAYforum
- Vertical Visions: TIPM Fuel Pump Relay Solutionsmanufacturer
- MAKS TIPM Rebuilders: Fuel pump relay issues in the TIPM for MOPARmanufacturer
- Vertical Visions: Ram 1500 TIPM solutionsmanufacturer
NHTSA 22V406 / FCA Z46 covers affected 2014-2019 RAM 1500 trucks with the 3.0L diesel, while 22V767 / FCA Z96 covers affected 2020-2022 RAM 1500 trucks with that engine. High-pressure fuel-pump failure can introduce debris or cause fuel starvation and an unexpected loss of drive power. Together the campaigns support the indexed model-year span, but only VIN-selected vehicles are included and no owner-frequency count is established.
Common Symptoms
- VIN checked for Z46 and Z96
- stall or loss-of-power sequence recorded
- rail pressure and contamination evidence preserved
- pump and downstream fuel-system scope established
How to Fix
Check the VIN for Z46 / 22V406 and Z96 / 22V767. Have the dealer replace the high-pressure fuel pump and inspect or replace additional fuel-system components as necessary, free of charge. If the engine stalls or loses power, use hazards, steer and brake to a safe location and arrange service. Do not buy a high-pressure pump, injector, rail or fuel-system kit from this page; campaign eligibility, contamination extent, completed remedy, current part number and VIN fitment must be established first.
Sources for this issue (3)
P0087 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0087 mean on a RAM?
P0087 stands for "Fuel Rail/System Pressure - Too Low." This code means the fuel rail or fuel system pressure has dropped below the level the engine's computer expects. The computer monitors a fuel pressure sensor and has seen pressure fall too low, meaning the engine isn't getting enough fuel — especially noticeable under acceleration or load. This is most common on direct-injection and diesel systems that run very high pressures. Symptoms include hard starting, stalling, hesitation, lack of power, and possible limp mode. On RAM it is documented across 2 models: 2500, 1500.
What are the most common causes of P0087?
The most common causes of P0087 are: Clogged or dirty fuel filter, Weak or failing fuel pump (lift pump or high-pressure pump), Faulty fuel pressure regulator or control valve, Restricted or leaking fuel lines, Faulty fuel pressure sensor, Air in the fuel system or running low on fuel, Worn high-pressure pump (direct injection/diesel). The specific cause varies by vehicle.
How much does it cost to fix P0087 on a RAM?
Published repair estimates on RAM range from $50 to $12,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0087 on a different make?
View P0087 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.