P2294 on 2009-2015 Audi TTS (TTS) — Fuel Pressure Regulator 2 Control Circuit
1 vehicles · 1 makes · $30-$4,000 repair
How to diagnose and fix P2294: most-reported vehicles
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Audi TTS · 2009–2015
The Audi TTS Mk2 (2009-2015) with the EA888 2.0 TFSI uses a high-pressure fuel pump (HPFP) driven directly by a dedicated lobe on the intake camshaft, with a cam follower (tappet) as the intermediary. The cam follower wears through its hardened surface over 30,000-50,000 miles, eventually allowing metal-to-metal contact between the HPFP and camshaft lobe. Once the camshaft lobe is worn, no amount of new cam followers will fix the issue—only a new camshaft ($2,000-$4,000) will restore fuel pump operation. If caught early, the cam follower is a $30 part that takes 30-60 minutes to replace. TTForum.co.uk and Audizine document this as a critical inspection item for all FSI/TFSI engines. The TTS's higher boost pressure increases fuel pump cycling, accelerating follower wear. This issue was largely resolved in Gen 3 EA888 engines (2015+) with a roller follower design.
Common Symptoms
- Engine stumbling or surging under load
- Loss of power during hard acceleration
- Check engine light with fuel pressure codes (P2294, P0087)
- Long cranking on startup
- Engine stalling at idle
- Ticking noise from fuel pump area (top of engine)
How to Fix
INSPECTION (every 20,000 miles): Remove HPFP (3 bolts) and inspect cam follower surface. If the hardened coating is wearing through (visible copper/brass color), replace follower immediately ($30-$50 part, 30-60 minutes labor). CRITICAL: Ensure cam lobe is at LOW point before reinstalling—if at peak, you'll compress the spring and can break the mounting bolts. If CAMSHAFT WORN (deep groove in lobe): Replace camshaft ($2,000-$4,000). If FUEL PUMP FAILED: Replace HPFP ($400-$800). PREVENTION: Inspect cam follower every 20,000 miles as routine maintenance. Add to every oil change checklist. Consider IE (Integrated Engineering) upgraded HPFP with roller follower to eliminate wear entirely.
Sources for this issue (1)
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P2294 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 P2294 mean?
P2294 stands for "Fuel Pressure Regulator 2 Control Circuit." This fuel system code means the control circuit for the second fuel pressure regulator is faulty. On direct-injection or some diesel/high-pressure fuel systems, a pressure regulator (control valve) adjusts fuel rail pressure to match engine demand; regulator 2 is the second such valve. The computer commands the regulator and monitors its electrical circuit, setting this code when it sees an open, short, or out-of-range condition. Depending on the system, you may experience hard starting, rough running, reduced power, stalling, or fuel-economy problems.
What are the most common causes of P2294?
The most common causes of P2294 are: Faulty fuel pressure regulator/control valve 2, Open, shorted, or corroded regulator wiring, Damaged or loose electrical connector, Blown fuse or relay feeding the circuit, Poor ground or power supply to the regulator, Clogged regulator or fuel contamination, Faulty engine control module (PCM) — rare. The specific cause varies by vehicle.
How much does it cost to fix P2294?
Repair costs for P2294 range from $30 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by P2294?
Au7o has documented P2294 across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.