Guides
Used BMW 320d Buyer's Guide: N47 vs B47, Faults and OBD2 Checks
N47 rear timing chain vs B47 front chain. ZF 8HP mechatronic. DPF, EGR, AdBlue. The 5 checks before you pay 8,000 to 28,000 euros for a used BMW 320d.
May 16, 2026
10 min
Topic Cluster: AI Diagnostics
AI-Powered Car Diagnostics
Complete guide to AI-powered vehicle diagnostics, failure prediction, health monitoring, and smart diagnostic features. Learn how AI transforms vehicle diagnostics.
All Posts in This Cluster
Guides
EGR Delete Detection: What OBD2 Will (And Won't) Show on a Used Diesel
EGR deletion is the hardest of the three diesel emissions cheats to detect with OBD2. Here is what the scan tool reveals, what it cannot, and three physical checks that close the gap.
April 23, 2026
9 min
Guides
P0016 Code: Camshaft Position Correlation (Bank 1 Sensor A)
P0016 means the crankshaft and camshaft are out of sync. Usually a timing chain stretch, VVT solenoid, or oil issue. This can be expensive if ignored. Here is how to diagnose it and what to expect.
March 17, 2026
7 min
Guides
Year-Round Car Maintenance: Complete Seasonal Guide
Seasonal car maintenance organized by system - battery, cooling, tires, brakes, fluids. What to check and when, so nothing gets missed.
November 15, 2025
14 min
Technology
EV Diagnostics: What Your Scanner Can (and Can't) Tell You
Your OBD-II scanner works great on petrol cars, then you plug it into an EV and get almost nothing. Here's what actually works.
October 10, 2025
12 min
Tips & Tricks
DIY Car Repairs for Beginners: Safe & Easy Maintenance
Learn which car repairs you can safely DIY, which ones will cost you more if you try, and what EU shops actually charge.
October 1, 2025
16 min
How-To Guides
ECU Tuning, Coding & Programming: What You Need to Know (2026 Guide)
ECU coding, programming, and tuning explained for EU car owners. Legal risks, warranty impact, insurance, costs, and what happens when things go wrong.
September 13, 2025
14 min
How-To Guides
Live Data Stream Analysis: Use Your OBD2 Scanner Like a Pro (2026 Guide)
Master OBD2 live data analysis. Learn fuel trim patterns, O2 sensor waveforms, misfire counters, and diagnostic techniques that find the real problem.
September 10, 2025
18 min
Guides
MAF Sensor Cleaning: Step-by-Step DIY Guide (2026)
Clean your MAF sensor in 15 minutes for under €10. Step-by-step guide with OBD2 verification to fix hesitation, rough idle, and poor fuel economy.
April 25, 2025
12 min
Guides
Best Professional Diagnostic Scanners 2026: Multi-Brand Repair Shop Buying Guide
Professional diagnostic scanners for 2026 repair shops: Autel, Launch, Snap-on, Topdon, Foxwell compared with EUR pricing, annual subscription costs, and 5-year TCO. Multi-brand coverage for independent technicians and dealer-specialty shops.
March 1, 2025
16 min
Guides
Car Won't Start? Complete Troubleshooting Checklist
Systematic checklist for diagnosing a car that won't start. Covers battery, starter, alternator, fuel system, sensors, and immobiliser issues with OBD2 diagnostics throughout.
February 25, 2025
14 min
Guides
What is OBD2? Complete Beginner's Guide to Car Diagnostics
Learn how OBD2 works, find the port in your car, understand diagnostic trouble codes, know which problems you can fix yourself, and when to see a mechanic.
February 10, 2025
14 min
Guides
P0420 Code: Catalyst Efficiency Below Threshold - Causes & Fix Cost
P0420 explained: what catalyst efficiency below threshold means, why it's not always the converter, diagnostic steps, repair costs (€150 to €2,500+), and when it's safe to keep driving.
January 20, 2025
14 min
Guides
Best Car Diagnostic Tools 2026: Pricing, Multi-Brand Coverage & Repair Shop Picks
Side-by-side comparison of the best car diagnostic tools for 2026: scanners, apps, multi-brand coding tools, and professional repair-shop tablets. Real EUR pricing across every tier from €30 to €1,500.
August 30, 2024
16 min