Buy Audi Q3 Direct Injection High Pressure Fuel Pumps

The Audi Q3's gasoline direct-injection high-pressure fuel pump-often called the HPFP, fuel-supply pump, or high-pressure pump-sits on the top of the 2.0 TFSI engine and is pushed by a special lobe on the intake camshaft. It takes fuel that is only about 4-6 bar from the in-tank pump and squeezes it up to roughly 200-350 bar (2,900-5,000 psi) so the injectors can spray an ultra-fine mist straight into the combustion chambers. (Bosch Mobility Solutions, Bosch Mobility Solutions, Audi World) When the pump or its tiny cam follower wears out, owners may notice long cranks, sputtering, "limp-mode," fault codes such as P0087 or P2293, and a distinct metallic ticking. (Cherry Hill Audi, ShopDAP, Car and Driver)

Gasoline direct injection (GDI) engines spray fuel right into the cylinders instead of the intake ports. This needs very high pressure, supplied by the HPFP. Inside the pump, a small piston rides the cam lobe to build pressure. A volume-control valve meters how much fuel reaches the rail, while a rail sensor and relief valve keep pressure stable. (Bosch Mobility Solutions, Bosch Mobility Solutions) The Audi Q3's 2.0 TFSI versions typically operate near 50-150 bar during gentle cruising and can command up to about 200 bar under load. (Audi World)

• Operating range: ~40 bar idle to 200 bar peak; system components are tested to 350 bar. (Bosch Mobility Solutions, Audi World)
• Drive method: Mechanical plunger actuated by intake camshaft. (NHTSA Static)
• Typical engine codes: CPMA, CPMB, DFY, UDZ and other EA888-family variants used in 2015-2025 Q3 models. (Manuals+)
• Fuel line note: Audi service literature states the high-pressure feed line must be replaced if removed to prevent leaks. (AutoZone.com)

• Hard starts or extended cranking. (Cherry Hill Audi)
• Hesitation, sputtering, or random misfires while driving. (ShopDAP)
• Sudden power loss with dash message "Engine power reduced."
• Metallic ticking that rises with engine speed (normal to a point, but louder when the follower wears). (Car and Driver)
• Fault codes P0087 (rail pressure too low) or P2293 (fuel-pressure regulator 2). (NHTSA Static)

• Cam follower wear: Excessive wear drills through the follower, letting the cam lobe grind the pump plunger tip. (, ShopDAP)
• Contaminated or poor-quality fuel: Debris or varnish can stick the pump's one-way valves. (NHTSA Static)
• Vent-pipe recall issue: On some 2021-2022 Q3s, a damaged tank vent line lets fuel back up and causes the pump to click off during refueling, raising cabin fumes and spill risk. (NHTSA Static)
• Carbon build-up: GDI engines don't wash intake valves with fuel, so blow-by vapors can form hard deposits that strain the pump by forcing longer injector pulses. (Wikipedia, Wikipedia)

• Inspect the cam follower every 20,000-30,000 mi (about 32,000-48,000 km) and replace if any wear spot is seen. (ShopDAP)
• Use quality fuel and change oil on schedule. Fresh oil protects the small pump plunger and cam lobe. (NHTSA Static)
• Add a catch-can or clean valves periodically to combat carbon. (Wikipedia)
• Relieve rail pressure before loosening lines-up to 200 bar can injure skin. (Bosch Mobility Solutions)

1. Disconnect the battery and remove engine cover.
2. Bleed residual fuel pressure via scan tool or by pulling the fuel-pump fuse and cranking.
3. Unclip the electrical connector and low-pressure hose.
4. Mark and loosen the high-pressure line (fit a new pipe at refit). (AutoZone.com)
5. Unbolt the pump (usually two M6 bolts).
6. Slide in the new pump with a new cam follower, torque bolts to spec, and prime the system with key-on cycles before start-up.
   Time estimate: about 1.5-2.5 hours for an experienced DIYer or technician.

Online repair databases list an average replacement cost of $1,041-$1,219 USD (parts + labor) for an Audi Q3. (RepairPal.com) Mobile-mechanic estimates show $322 USD in lower-cost regions (labor rates vary widely). (YourMechanic) Remember that replacing the follower and high-pressure line adds modest extra parts cost but helps avoid repeat failures.

A healthy HPFP lets the Q3's turbocharged 2.0 TFSI run lean under light load and rich under boost, boosting torque by up to 50 % at low rpm while cutting CO₂ emissions. (Bosch Mobility Solutions, Bosch Mobility Solutions) It also improves cold-start efficiency and reduces knock because the in-cylinder fuel spray cools the charge. (Wikipedia)

GDI's high injection pressure brings better mileage, but studies show it can release more black-carbon particles than older port-injection systems if not paired with a particulate filter. Keeping the HPFP, injectors, and PCV system clean helps cut those emissions.

Q: What does the high-pressure fuel pump do?
A: It boosts fuel pressure so the direct injectors can spray a fine mist straight into the engine, giving quicker power and better fuel economy. (Bosch Mobility Solutions)

Q: Is ticking from the HPFP normal?
A: A light tick is normal; loud knocking often means the cam follower or pump plunger has worn. (Car and Driver)

Q: Which codes point to a bad pump?
A: The most common are P0087 (rail pressure too low) and P2293 (pressure regulator performance). (NHTSA Static)

Q: Can I keep driving with those codes?
A: It's risky-low fuel pressure can cause lean running and engine damage. Fix it soon. (ShopDAP)

Q: How often should I replace the cam follower?
A: Check it every 20-30 k miles; replace anytime you see a shiny wear spot through the DLC coating.

Q: Do I need special tools?
A: Basic hand tools plus a torque wrench for the pump bolts; a fuel-line crow-foot helps with tight spaces. (AutoZone.com)

Q: Why change the high-pressure line?
A: It uses one-time crush seals-re-using it can cause leaks that spray fuel at 200 bar.

Q: Does carbon build-up hurt the pump?
A: Indirectly-sticky valves force longer injector pulses, so the pump works harder. Catch-cans and walnut-blasting help. (Wikipedia)

Q: What fuel is best?
A: Top-tier 91-octane (95 RON) or higher reduces knock and keeps the HPFP lubricated. (NHTSA Static)

Q: Are there recalls?
A: No HPFP-specific recalls, but a 20DS action for 2021-22 Q3s covers a vent-pipe defect that can mimic pump issues. (NHTSA Static)

Q: How long does the pump last?
A: With clean oil and timely follower changes, many last 120,000 mi (193,000 km) or more. (NHTSA Static)

Q: Will an upgraded pump add power?
A: Tuners sometimes install higher-flow HPFPs, but on a stock Q3 the factory unit supports factory power without limits. (Audi World)

Q: Why does the engine run richer under boost?
A: Extra fuel cools the combustion chambers and prevents knock, which the HPFP enables by supplying high pressure. (Bosch Mobility Solutions)

Q: Does the HPFP affect emissions?
A: Yes-stable high pressure allows precise mixtures, but GDI can raise particle emissions if the pump or injectors wear. (Wikipedia)

Q: Can I DIY the job?
A: Confident DIYers can, but always relieve pressure, torque fasteners properly, and prime the system before start-up. (AutoZone.com)