RAM Fault Code
Free · no signupP0087
Engine bogs under load; "Fuel Filter Low Pressure" warning; Stalling.
System
Not specified
Symptom
Engine bogs under load; "Fuel Filter Low Pressure" warning; Stalling.
Diagnosis & fix steps
Fuel Rail Pressure Too Low.
LOGIC: The High Pressure (CP3 or CP4) pump cannot meet the commanded rail pressure.
ACTION: 1. Change both fuel filters.
2. Check for air bubbles in the fuel lines.
3. Perform a fuel lift pump flow test.
FIX: Replace Fuel Filters; replace CP4 pump (if 2019-2020); replace injectors.
Red Seal field insights
If you have a 2019–2020 RAM, this code may be related to the CP4 pump recall. RAM has been switching these back to the more reliable CP3 pumps under warranty.
Same code keeps coming back?
That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.
Read before you touch anything
- This is general reference information, not a repair manual. It is for trained, qualified technicians.
- Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
- Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
- You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
- Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.
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