#VAG
17 posts in Car Diagnostics blog about "VAG" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Audi Q3 and A5: shared VAG hardware, specific complaints
Two different body styles on the same group engines and gearboxes. Almost nothing on the fault list is exclusive to Audi, which makes documentation easy to find.
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SEAT Ibiza and Arona: the small VAG platform in detail
Mechanically a Polo and a T-Cross with different bodywork. That is genuinely useful — every fault is already documented somewhere else in the group.
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Skoda Scala and Yeti: two eras of the same engineering
The Yeti belongs to an earlier VAG generation and the Scala to the current one. Same group hardware, different specific concerns.
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VW Polo: OBD diagnostics across the small-engine generations
Small VAG engines, big VAG documentation. The Polo shares almost everything with the Fabia and Ibiza, which makes its fault list easy to research.
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Audi A6 and A8: OBD diagnostics on the big platforms
Large Audis carry more modules than most cars have components. That changes what a scan means: the full code set across modules matters more than any single code.
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SEAT Leon and Ateca: OBD diagnostics and VAG shared parts
Mechanically these are Golfs and Tiguans with different bodywork, which means every fault is already documented under another badge. Here is what transfers and what does not.
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Skoda Kodiaq and Karoq: OBD diagnostics on VAG SUVs
Skoda SUVs run VAG engines and gearboxes, so the fault list is shared with Volkswagen and Audi. That is useful — everything is already documented somewhere.
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VW Tiguan and Touareg: common OBD faults on VAG SUVs
Two VW SUVs at opposite ends of the range. The Tiguan inherits the mainstream VAG fault list; the Touareg adds air suspension and a complexity level that changes the calculus.
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Intake swirl flaps P2015: the plastic linkage that can cost you an engine
The best-known code in the VAG diesel world. The cause is usually almost comic — a plastic actuator linkage crumbled. The consequence often is not: the fragment can end up inside a cylinder.
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Audi Common OBD-II Codes: A3, A4, A6, Q5, TT
Top DTC codes for Audi A3, A4, A6, Q5, TT: TFSI EA888 common issues, S-tronic DSG problems, quattro driveline codes, VAG UDS extended diagnostics — OBD-II guide.
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Audi Q7 and Q5 OBD-II Diagnostics: 3.0 TDI V6, 3.0 TFSI, S-tronic, Air Suspension
DTC codes for Audi Q7 4L/4M and Q5 8R/FY: 3.0 TDI V6 CP4 P0087, 3.0 TFSI supercharger P0299, S-tronic DL501 P0715, Audi Air Suspension C1141 — OBD-II Live Data and diagnosis.
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Porsche Cayenne and Panamera OBD-II Diagnostics: 3.6 V6, 4.8 V8, PDK, PASM
DTC codes for Porsche Cayenne 958 and Panamera 970/971: 3.6 V6 P0128, 4.8 Biturbo P0300, PDK P0894, PASM air suspension C1A25 — Live Data and OBD-II without PIWIS tester.
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SEAT and Cupra Common OBD-II Codes: Ibiza, Leon, Cupra Formentor
Top DTC codes for SEAT Ibiza, Leon, Cupra Formentor: EA211 1.0/1.5 TSI misfires, DSG DQ200/DQ381 problems, P0299 turbo, VAG extended diagnostics — OBD-II guide.
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Skoda Octavia and Superb — Common OBD-II Codes: 1.4 TSI, 1.6 TDI, 2.0 TDI
Top DTC codes for Skoda Octavia III/IV, Superb III: EA211 1.4 TSI timing chain, TDI 1.6/2.0 EGR, DSG DQ250 wet clutch, VAG-specific OBD-II diagnostics.
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Manufacturer coding: how to activate "hidden" features on VAG, BMW and Mercedes via OBD
What long coding on VAG (VCDS) is, byte coding on BMW (ISTA/E-Sys), Xentry SCN on Mercedes. Which features you can legally enable, risks, and how not to "brick" an ECU.
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VAG long coding cheatsheet: 15 popular codings for VW, Audi, Skoda via VCDS/OBDeleven
Ready-made VAG long coding cheatsheet (VW Golf, Audi A4, Skoda Octavia): activate cornering lights, comfort blinker, auto-lock, DRL, video-in-motion — bytes + bit positions.
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EPC Warning Light: What It Means on Your VAG Car and What to Do
Everything you need to know about the EPC (Electronic Power Control) light on Volkswagen, Audi, Škoda, and SEAT vehicles: common causes, how to diagnose it, and whether you can keep driving.