P0087 on Hyundai: How to Diagnose & Fix
Fuel Rail/System Pressure - Too Low
3 Hyundai models · 3 documented issues · 1 critical · $450-$900 repair
P0087 on Hyundai by model: symptoms, diagnosis and fix
The GDI high-pressure fuel pump on 2.4L Tucson models can fail, causing extended crank times, rough idle, and stalling. The pump cam follower wears prematurely, reducing fuel rail pressure below specification. This is especially common above 80,000 miles.
Common Symptoms
- Long crank before starting
- Rough idle especially when cold
- Engine stalling at stops
- P0087 low fuel rail pressure code
- Hesitation under acceleration
How to Fix
Diagnose by checking fuel rail pressure with a scan tool (should be 500-2,000 PSI depending on load). Replace the high-pressure fuel pump (Hyundai part 35320-2G740). Also inspect and replace the cam follower/roller. Parts cost $250-400, labor $200-400. Total $450-800.
What you need to diagnose it
The repair instructions explicitly call for reading stored codes. Use a scanner that can read the named code families before choosing a repair.The recommended scanner supports these code families; confirm your exact year, model and module coverage before buying.
ANCEL AD310 Classic OBD-II Scanner
Read & clear engine (P) codes
$20–$40View
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Reading and clearing the code is DIY work. Module replacement or reprogramming is not — most modules are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Hyundai high-pressure fuel pumpOEMHyundai 35320-2G740
Confirm VIN/build/original number because an intervening production r
- Genuine Hyundai high-pressure-pump roller tappetOEMHyundai 35325-2G700
Confirm VIN/engine and inspect the cam lobe; it is not pr
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
- TipUse Top Tier gasoline to reduce carbon buildup on the fuel pump cam follower
Sources for this issue (2)
The 2022-2023 Elantra N with the 2.0L Theta III turbocharged engine was recalled because the fuel pump can fail, cutting fuel delivery and causing a loss of drive power while the car is being driven. On a 276 hp turbo car this is more than an inconvenience - a stall in traffic or at highway speed with no warning is a crash risk. The typical progression owners describe with this class of fault is a hot restart that cranks but will not fire, then intermittent stumbling and power loss under load as the pump's output falls below what the high-pressure side demands, then a hard stall. This is specific to the Elantra N's fuel system and is separate from the fuel pump module and level-sender failures seen on earlier Elantra generations.
Common Symptoms
- Engine stalls while driving
- Loss of drive power with no warning
- Extended cranking or no-start, especially when hot
- Stumbling or hesitation under hard acceleration
- Check engine light with fuel pressure codes
How to Fix
Free recall remedy. Under NHTSA campaign 24V528000 dealers update the engine control software - which adds detection and protection logic - and replace the fuel pump assembly where necessary, at no charge. Verify the VIN at nhtsa.gov/recalls. If the car has already been stalling, insist that the pump be replaced rather than accepting the software flash alone, and ask for the fuel pressure test results. Do not keep driving a car that has stalled at speed.
Sources for this issue (2)
First-generation 1.6 T-GDI Velosters have two well-documented low-fuel-pressure failures that present identically. On 2013-2014 Turbos an internal restriction in the low-pressure fuel feed tube from the tank starves the high-pressure pump under load, setting P0087 (fuel rail/system pressure too low) and causing hesitation, misfire and stalling; Hyundai addressed it with Service Campaign 937 / TSB 15-01-023 (fuel tube inspection/replacement), which owners on velosterturbo.org documented having done at the dealer. Separately, the camshaft-driven high-pressure fuel pump itself wears and loses output (one owner measured 300 psi at idle against a 500 psi spec), producing the same P0087 with rough idle and stalling on both turbo and base 1.6 cars.
Common Symptoms
- Check engine light with P0087
- Hesitation or bogging under hard acceleration
- Rough idle and stalling
- Extended crank or no-start when hot
- Misfire codes accompanying P0087
How to Fix
Read fuel-rail pressure with a scan tool. Check first whether Campaign 937 was performed (2013-2014 Turbo): the low-pressure feed tube is replaced under the campaign at no charge. If rail pressure is low with a healthy in-tank pump and clean feed line, replace the high-pressure fuel pump and delivery tube (about $500-$900 at a shop; the pump alone is $250-$400). Rule out the in-tank low-pressure pump and its filter before condemning the HPFP.
Sources for this issue (4)
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 Hyundai?
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 Hyundai it is documented across 3 models: Tucson, Elantra, Veloster.
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 Hyundai?
Published repair estimates on Hyundai range from $450 to $900 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.