P0087 on Acura: How to Diagnose & Fix
Fuel Rail/System Pressure - Too Low
3 Acura models · 3 documented issues · 3 critical
P0087 on Acura by model: symptoms, diagnosis and fix
The Denso-supplied in-tank fuel pump module fitted across virtually the entire ILX production run uses an impeller that was molded with insufficient density and inadequately dried. The impeller absorbs fuel, swells, and interferes with the pump body. The pump then fails to deliver pressure - typically presenting first as a long crank or a hard start, then progressing to an engine stall that can happen at road speed with no warning and no restart. The ILX coverage was expanded twice: an initial 2019-2020 campaign (21V215, itself an expansion of ) was later broadened to cover 2013-2023 ILX under 23V858, so this spans every powertrain the car was sold with - 2.0 automatic, 2.4 manual, hybrid, and 2.4 DCT alike.
Common Symptoms
- Engine stalls while driving
- Extended cranking before start
- No-start condition
- Whining or absent fuel pump prime noise at key-on
- Check engine light
- Loss of power under load
How to Fix
Free recall remedy under NHTSA 23V858 (Honda campaign codes KGC/KGD); earlier cars may instead fall under 21V215. Dealers replace the entire fuel pump module at no charge. Owner notification for the expanded campaign was mailed September 2024. Do not pay for a fuel pump on an ILX without first running the VIN - a private-pay pump module replacement typically runs $700-$1,200.
Sources for this issue (3)
Certain 2018-2020 MDX (J35Y5 3.5L V6) and MDX Sport Hybrid (3.0L V6 hybrid) units were built with low-density, improperly molded in-tank fuel pump impellers. Surface cracking from production solvent absorption causes the impeller to swell and seize against the pump body, leading to no-start or stall while driving. Honda issued NHTSA recall 23V-858 covering ~2.5 million Honda/Acura vehicles.
Common Symptoms
- Engine stall while driving
- Long cranking / no-start
- Intermittent loss of power
- Check Engine Light
- Fuel pump warning
How to Fix
Free recall remedy under NHTSA 23V-858 - dealer replaces the fuel pump module with a redesigned part. Check VIN at nhtsa.gov/recalls or owners.acura.com and schedule replacement immediately if not yet completed.
Sources for this issue (3)
The Denso in-tank low-pressure fuel pump module used across the first-generation TLX fails, causing hesitation, hard starting and complete engine stall - often at speed or mid-turn. Two distinct defect mechanisms were recalled: particulates in fuel adhering to internal pump components and degrading pump output (19V060000, covering 2015-2019 TLX with the 3.5L V6), and a pump impeller that absorbs fuel, deforms and binds against the pump housing (21V215000 for 2019-2020, expanded by 23V858000 to 2013-2023 Honda/Acura vehicles including TLX). Owners report repeated stalls even after one recall repair, and a documented cascade in which a failed low-pressure pump is replaced but the high-pressure pump fails soon after because dealers replace only one component - producing P0087 low fuel rail pressure. Recall parts availability has been a recurring complaint, with owners waiting months.
Common Symptoms
- Engine stalls without warning while driving or turning
- Long crank or no start, worse in hot weather
- Hesitation and stumble under acceleration
- Check engine light with low fuel rail pressure code
- Fuel pump whine from the tank
- Repeat stalling after a fuel pump replacement
How to Fix
Run the VIN against all three campaigns (19V060000, 21V215000, 23V858000) - a car can be open on more than one. Remedies are free: for 19V060000 a fuel injection ECU software update plus fuel pump replacement if needed; for 21V215000 and 23V858000 replacement of the fuel pump module. If stalling continues after a low-pressure pump replacement and the scan tool shows P0087, insist the high-pressure fuel pump and rail pressure sensor be checked as well rather than accepting a repeat low-pressure pump swap. Out of recall coverage a fuel pump module runs roughly $600-$1,200 installed.
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 Acura?
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 Acura it is documented across 3 models: ILX, MDX, TLX.
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 Acura?
Repair costs vary widely with the root cause and Acura model; each issue on this page carries its own estimate where one is published.
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.