Topic Cluster: OBD2 Diagnostics

OBD2 Diagnostics & Fault Codes

Complete guide to OBD2 diagnostic codes. Learn what P0300, P0171, P0420, and other fault codes mean, how to diagnose them, repair costs, and when it's safe to drive.

All Posts in This Cluster

Guides

7 Fault Code Myths That Cost Car Owners Money (2025)

Over $1 billion annually is wasted on unnecessary repairs due to misunderstood fault codes. Here are the 7 most damaging myths—and what they really cost you.

October 16, 2025

10 min

Guides

OBD-II Fault Codes Explained: Complete Guide to P0300, P0171, P0420 & More (2025)

Your check engine light just came on. Here's exactly what P0300, P0171, P0420, and other fault codes mean—plus how much it costs to fix each one.

August 14, 2025

12 min

Guides

P0420 Code: What It Means & How Much It Costs to Fix (2025)

P0420 code means your catalytic converter isn't working efficiently. Learn what causes it, how to diagnose it, and repair costs from $400-$2,500.

August 11, 2025

8 min

Guides

P0171 Code: What It Means & How Much It Costs to Fix (2025)

P0171 gets 31,000 searches monthly. Your engine is running with too much air. Here's what causes it, how to fix it yourself, and what it costs at a shop.

August 8, 2025

8 min

Guides

P0300 Code: What It Means & How Much It Costs to Fix (2025)

P0300 gets 45,000 searches monthly. A flashing check engine light means STOP DRIVING. Here's what causes misfires, how to diagnose them, and when it's safe to drive.

August 5, 2025

9 min

Guides

Fault Codes Explained: Complete OBD-II Code Guide (2025)

Complete guide to OBD-II fault codes. Learn what P0300, P0171, P0420, and other codes mean, how to diagnose them, repair costs, and when to drive safely. Your comprehensive fault code reference.

January 25, 2025

28 min

Guides

OBD-II Fault Codes Explained: Complete Guide to P0300, P0171, P0420 and More (2025)

Complete OBD-II fault codes guide. Learn what P0300, P0171, P0420 and other codes mean, how to diagnose them, repair costs, and when it's safe to drive.

January 15, 2025

15 min

Guides

Car Diagnostic: What It Is, How It Works & Cost Guide (2025)

Learn what car diagnostic is, how it works, types of diagnostics, and cost breakdown. Compare mechanic (€150) vs DIY with SKANYX (€39). Complete 2025 guide.

January 5, 2025

10 min

Guides

Carly App Review: Is €60/Year Worth It? (Honest Pros & Cons + Alternative)

Honest Carly app review: pros, cons, pricing, and whether it's worth €60/year. Compare features, limitations, and alternatives like SKANYX for AI-powered diagnostics.

January 2, 2025

11 min

Guides

SKANYX vs OBDeleven vs Carly: Complete 3-Way Comparison (2025)

Complete 3-way comparison: SKANYX vs OBDeleven vs Carly. Compare features, pricing, use cases, and which OBD2 app is best for your needs in 2025.

November 10, 2024

15 min

Guides

How SKANYX AI Chat Explains Fault Codes Better Than Mechanics

Compare how SKANYX AI Chat explains fault codes vs. mechanics. See side-by-side examples showing how AI makes diagnostics accessible with plain English explanations.

October 15, 2024

10 min

Guides

OBDeleven for Coding, Carly for Used Cars, SKANYX for AI - Which Do You Need?

Use case guide: OBDeleven for coding, Carly for used cars, SKANYX for AI. When to use each app, which features matter, and how to choose the right one.

October 5, 2024

11 min

Guides

Best Car Diagnostic Tools 2025: Complete Buyer's Guide (OBD2 vs Professional)

Compare the best car diagnostic tools for 2025. OBD2 scanners, professional scan tools, mobile apps. Find the right tool for your needs and budget.

August 30, 2024

14 min

Guides

OBDeleven Review: Is It Worth €79.99? (+ Better Alternative for Most Users)

OBDeleven review: Is it worth €79.99? Honest pros, cons, and pricing analysis. OBDeleven is good for VW/Audi coding, but SKANYX is better for AI diagnostics.

August 25, 2024

11 min

Guides

Best OBD2 App 2025: Top 7 Reviewed & Compared (SKANYX #1)

Find the best OBD2 app for 2025. Compare top 7 apps: SKANYX (#1 for AI diagnostics), OBDeleven, Torque Pro, Carly, Carista. Features, pricing, which is best.

August 20, 2024

14 min

Guides