P0263 on SEAT: How to Diagnose & Fix
Cylinder 1 Contribution/Balance
1 SEAT model · 1 documented issue · 1 critical · $400-$4,000 repair
P0263 on SEAT by model: symptoms, diagnosis and fix
The BKD 2.0 TDI Pump-Düse engine in Leon Mk2 (and Golf Mk5, Passat B6, Audi A3 8P) suffers PD injector failure, particularly on long-life servicing. Failure modes: misfire on one cylinder, hard starting, white smoke, sooty exhaust. Often accompanied by cracked cylinder head between #2 and #3 due to local overheating.
Common Symptoms
- misfire cold
- hard start
- white smoke
- rough idle
How to Fix
Single injector replacement €400-€700 incl. coding. Full set (4) €1,400-€2,000. If head crack present, head rebuild adds €1,200-€2,000 more. Use VW 507.00 oil at 10,000 km max, NOT long-life intervals.
P0263 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 P0263 mean on a SEAT?
P0263 stands for "Cylinder 1 Contribution/Balance." This code means the engine computer has detected a contribution or balance problem on cylinder 1, indicating that this cylinder is producing more or less power than the others. The computer monitors tiny speed changes from each cylinder's firing event and flags one that is contributing unevenly. It points to a fueling, compression, or mechanical imbalance specific to cylinder 1 (and, on some diesels, a related fuel injector circuit). You may notice rough idle, a misfire feel, or reduced power. On SEAT it is documented across 1 model: Leon.
What are the most common causes of P0263?
The most common causes of P0263 are: Faulty fuel injector on cylinder 1, Clogged or leaking cylinder 1 injector, Low compression in cylinder 1 (valves, rings, head gasket), Worn or fouled spark plug / coil on cylinder 1 (gas engines), Injector wiring or connector fault on cylinder 1, Vacuum or intake leak affecting that cylinder, Carbon buildup or sticking valve on cylinder 1. The specific cause varies by vehicle.
How much does it cost to fix P0263 on a SEAT?
Published repair estimates on SEAT range from $400 to $4,000 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 P0263 on a different make?
View P0263 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.