#BMW
12 posts in Car Diagnostics blog about "BMW" — OBD-II diagnostics, DTC codes, repair. ← All posts
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BMW B47 and B48: the modular generation and what it actually breaks
BMW rebuilt its engine range around a common 500cc cylinder module. The result addressed the previous generation problems and introduced a shorter list of its own.
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BMW F30 3 Series: OBD diagnostics and the known weak points
The F30 generation is well documented, which makes it easy to diagnose and easy to check before buying. Three items dominate the fault list.
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BMW N20 and N26: timing chain, oil filter housing and boost
A well-regarded engine with one documented failure that determines whether a used example is a bargain or a liability. The check takes thirty seconds.
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BMW 1 Series F20: common faults an OBD scan reveals
The F20 shares its engines with most of the BMW range, which means its recurring faults are thoroughly documented. The timing chain question dominates any used purchase.
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MINI Cooper: common OBD faults on the BMW-based platform
A MINI is a BMW underneath, and it inherits the timing chain, carbon and cooling issues to match. The fault list is well documented — which means the warning signs are too.
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BMW E90: what to check by engine version, and why the diesel is its own story
On the E90 the cost of ownership is decided not by the body or the mileage but by which engine is under the bonnet. A breakdown by version, and why a cold start on a diesel is critical.
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BMW X5 and X3 OBD-II Diagnostics: N47 Chain, N57 Diesel, N55 VANOS, ZF 8HP
DTC codes for BMW X5 E70/F15 and X3 E83/F25: N47 timing chain P0016, N57 CP4 P0087, N55 VANOS P0011, ZF 8HP P0894, xDrive P175F — OBD-II Live Data without BMW ISTA.
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BMW N47 2.0d OBD Diagnostics: Most Common Faults on 1/3/5 Series, X1, X3
BMW N47 diesel diagnostics: P0087 fuel rail pressure, P2002 DPF, P0299 turbo, timing chain failure — OBD-II guide for BMW 116d, 118d, 320d, 520d, X1 20d.
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Immobilizer key learning: how to program a new key on 8 brands (Toyota, VW, BMW, Ford, GM, Hyundai, Nissan, Renault)
Lost your key, bought a new one — how to "program" it in the immobilizer. DIY vs shop, needs ELM327 or a special tool, prices $50-500.
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Brake pad wear via OBD-II: how BMW, Audi, Mercedes "count" remaining life
What OBD-II shows about brake pads on modern cars: wear sensors, calculated brake pad wear, codes C1000, C1100, and why "2000 mi to replacement" on a BMW is not guesswork.
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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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Common BMW Faults: E90, F30, G20 — DTC Codes and Repair
Catalogue of common faults on BMW 3-Series (E90, F30, G20) and 5-Series (E60, F10, G30): VANOS, timing chain, HPFP, DPF, injectors, electronics.