Guides
Turbo : symptômes de turbo HS, causes et coût de réparation
Un turbo qui siffle et une chute soudaine en mode dégradé trahissent souvent un de six défauts. Voici ce que fait un turbo HS et ce que coûte la réparation.
26 juin 202610 min
Topic Cluster/Groupe thematique : diagnostic par IA
Diagnostic auto par IA
Guide complet du diagnostic de vehicule par IA, de la prediction de pannes, du suivi de l'etat et des fonctions de diagnostic intelligent. Decouvre comment l'IA transforme le diagnostic de vehicules.
Tous les articles de ce groupe
Guides
DPF Regeneration: What It Is, the Signs, and Can You Drive?
DPF regeneration is your diesel burning soot out of its filter at over 600C. Here are the three types, the signs it is happening, and whether you can keep driving.
25 juin 20268 min
Guides
Problèmes d'arbre à cames : symptômes, causes, codes et coût
Ralenti instable, cliquetis à froid ou un code P0010 ? La plupart des problèmes d'arbre à cames sont une électrovanne ou un capteur pas cher, pas l'arbre usé.
24 juin 202611 min
Tips & Tricks
Starter Motor Replacement Cost and the Signs of a Bad Starter
A starter motor replacement costs 200 to 500 euros fitted. The symptoms of a bad starter, how to tell it from the battery, and what is fair to pay.
22 juin 202611 min
Tips & Tricks
Thermostat Replacement Cost and Stuck Thermostat Symptoms
A thermostat replacement costs 120 to 450 euros at a shop. The part is cheap, the labour is the swing, and the symptoms of a stuck thermostat are easy to read.
22 juin 20269 min
Guides
Grinding Noise When Driving: Causes, Safety and Repair Cost
A grinding noise when driving usually means brakes, a wheel bearing, a CV joint or a belt pulley. Match when it grinds to the part, and to the repair cost.
21 juin 20269 min
Guides
Symptômes d'alternateur HS : signes, causes et prix
Un voyant rouge de batterie, des phares faibles et une batterie qui se vide seule pointent vers un alternateur HS. Les signes, les causes et le prix.
21 juin 202610 min
Guides
Bad Ignition Coil Symptoms (and How to Confirm It With OBD2)
A failing ignition coil shows up as a misfire, rough idle, and a flashing engine light. Here are the symptoms, the codes that name the cylinder, and the cost.
21 juin 20268 min
Tips & Tricks
Car Battery Replacement Cost: Battery or Alternator?
A car battery replacement costs 60 to 260 euros depending on type. How to tell whether it is the battery or the alternator, and what is fair to pay.
20 juin 202610 min
Tips & Tricks
Alternator Replacement Cost: How Much Should You Pay?
An alternator replacement costs 200 to 450 euros reconditioned, or 350 to 700 new. The warning signs, how to tell it from a flat battery, and what is fair to pay.
19 juin 20267 min
Tips & Tricks
Throttle Body Replacement Cost: Clean It or Replace It?
A throttle body clean costs 30 to 90 euros and often fixes a rough idle outright. A full replacement runs 150 to 500 euros. Here is how to tell which you need.
19 juin 202610 min
Guides
Bad Fuel Pump Symptoms: Signs, Causes, and Repair Cost
Sputtering at speed, hard starts, stalling, and a whine from the tank point to a failing fuel pump. The symptoms, what OBD2 shows, and the cost to put it right.
19 juin 20268 min
Guides
Bobine d'allumage : rôle, signes de panne, codes et coût
Une bobine d'allumage alimente la bougie, et quand elle faiblit le moteur rate. Son rôle, pourquoi elle lâche, les codes qui nomment le cylindre et le coût.
19 juin 202610 min
Tips & Tricks
Brake Pad Replacement Cost: What Should You Pay Per Axle?
Brake pads cost 100 to 250 euros per axle, or 200 to 450 with discs. The signs you are due, why grinding wrecks the discs, and how to avoid paying for parts you do not need.
18 juin 20268 min
Guides
Bad Torque Converter Symptoms: Signs, Codes and Repair Cost
Shudder at 30-50 mph, RPM flare without acceleration, and harsh Park-to-Drive shifts point to a failing torque converter. Here are the signs, codes and costs.
18 juin 202610 min
How-To Guides
Airbag Warning Light Meaning: Is It Safe to Drive?
The airbag warning light just came on and the car still drives fine. Here is what the SRS light means, why it matters, and whether you can keep driving.
18 juin 20269 min
Tips & Tricks
Ignition Coil Replacement Cost: One Coil or the Whole Set?
An ignition coil replacement costs 40 to 180 euros for one fitted, or 150 to 600 for a full set of four. Here is the price by engine and when to do all four.
17 juin 20269 min
Tips & Tricks
Timing Belt Replacement Cost: How Much Should You Pay?
A timing belt replacement costs 300 to 700 euros, more with the water pump or on premium engines. Here is what is fair, when it is due, and why skipping it risks the engine.
17 juin 20269 min
Guides
Vanne EGR : rôle, symptômes, codes et coût
Une vanne EGR défectueuse donne un ralenti instable, des à-coups et un code P0401. Voici son rôle, les symptômes bloquée ouverte ou fermée, et le coût.
17 juin 202610 min
Tips & Tricks
Water Pump Replacement Cost: How Much Should You Pay?
A water pump replacement costs 150 to 400 euros alone, or 450 to 900 with the timing belt. The signs it is failing, and why ignoring it can warp the engine.
16 juin 20268 min
Guides
EGR Cooler Failure Symptoms on a Diesel (and Repair Cost)
Coolant vanishing with no puddle, white sweet smoke, and overheating point to a failing EGR cooler. Here are the symptoms, the head-gasket overlap, and the cost.
16 juin 20268 min
Tips & Tricks
Head Gasket Replacement Cost: Is Your Quote Actually Fair?
A head gasket replacement costs 500 to 2,500 euros depending on shop and engine. Read the stored code yourself for 15 euros before you authorise the bill.
14 juin 202610 min
Guides
Sonde lambda HS : symptômes, causes, codes et coût
Un voyant moteur, une hausse de consommation et un ralenti instable trahissent souvent une sonde lambda fatiguée. Symptômes, causes, codes et prix.
14 juin 202610 min
Tips & Tricks
Is My Mechanic Ripping Me Off? How to Tell and Protect Yourself
Worried your mechanic is overcharging or inventing repairs? Read the fault code yourself first, get an itemised quote, and ask for the old parts back.
13 juin 202611 min
Guides
How to Negotiate a Used Car Price With OBD2 Scan Evidence
Two stored fault codes can be worth several hundred euros off the asking price if you present them right. Here is how to turn a pre-purchase OBD2 scan into a documented discount.
12 juin 202610 min
Tips & Tricks
Car AC Repair Cost: Why It Is Not Cold and What Each Fix Costs
A regas runs 60 to 200 euros, a condenser 150 to 500, a compressor 600 to 1,500. Why your car AC is not cold, and what each repair should fairly cost.
10 juin 202611 min
Tips & Tricks
Clutch Replacement Cost: Is Your Quote Actually Fair?
A clutch replacement costs 500 to 1,200 euros, or up to 2,000 with a dual-mass flywheel. Read the codes yourself for 15 euros before you authorise the bill.
10 juin 20269 min
Tips & Tricks
Spark Plug Replacement Cost: What a Set Should Run You
A spark plug replacement costs 60 to 250 euros on a four-cylinder petrol. What plugs and labour are worth, the VAG TSI catch, and why diesels have none.
9 juin 202610 min
Guides
Why Does My Car Shut Off When I Stop? Causes, Fixes and Cost
Your car dies at every red light, then restarts fine. Here is what causes a car to shut off when you stop, how to find the fault, and what fixes cost.
7 juin 202610 min
Tips & Tricks
Catalytic Converter Replacement Cost (And Whether You Need One)
An aftermarket catalytic converter runs 350 to 1,200 euros and an OEM one 1,000 to 2,500 and up, but a P0420 code often means a 100 to 300 euro sensor instead.
5 juin 20268 min
Tips & Tricks
Timing Chain Replacement Cost: VW Audi TSI and TDI
A timing chain replacement runs 700 to 2,500 euros on VW and Audi TSI engines. What is fair by engine, why it rattles, and the codes to scan first.
4 juin 202610 min
Guides
Diesel Injector Failure Symptoms: Diagnose Before You Buy
A failing diesel injector knocks on cold start, smokes, and idles rough. Here are the symptoms, the cylinder-balance test, and how to confirm it with OBD2.
1 juin 202612 min
Guides
Dual Mass Flywheel Failure: Symptoms, Test, and Cost (2026)
A rattle at idle that vanishes when you press the clutch usually means a worn dual mass flywheel. Here are the symptoms, the test, and the real EU cost.
31 mai 202611 min
Guides
EGR Valve Cleaning: DIY Steps, Cost, and OBD2 Check
Clean a carboned diesel EGR valve yourself for €10-30. Symptoms, step-by-step removal, when to clean vs replace, and how to verify the fix with OBD2.
30 mai 202613 min
Guides
Glow Plug Testing and Replacement: A Diesel Cold-Start Guide (2026)
Long cranking on cold mornings and a flickering coil light point to glow plugs. Test each one with a multimeter, read the circuit codes, and know when to replace.
29 mai 202612 min
Guides
Oxygen Sensor Testing and Replacement: A DIY Guide
Test a lambda sensor with OBD2 live voltage or a multimeter, learn why cleaning is a myth, and see what replacement actually costs. Petrol and diesel covered.
26 mai 202613 min
Guides
Throttle Body Cleaning: Steps, Relearn, OBD2 Verify
Clean a sooty throttle body in under an hour for around 15 euros, handle the idle-relearn question honestly, and verify the fix with OBD2 live data.
24 mai 202612 min
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.
16 mai 202610 min
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.
23 avril 20269 min
Guides
How to Fix P0016: Camshaft Correlation Causes and Cost
P0016 repair cost runs from €50 for an oil change to €3,000 for a timing chain, depending on whether the fault is oil, a VVT solenoid, or chain stretch.
15 février 20268 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.
15 novembre 202514 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.
10 octobre 202512 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.
1 octobre 202516 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.
13 septembre 202514 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.
10 septembre 202518 min
Guides
Nettoyer le débitmètre d'air : guide pas à pas (2026)
Nettoie ton débitmètre d'air massique en 15 minutes pour moins de 10 EUR. Guide pas à pas avec vérification OBD2 pour corriger à-coups, ralenti instable et surconsommation.
25 avril 202511 min
Guides
Meilleurs scanners de diagnostic pro 2026 : guide d'achat multimarque pour garages
Scanners de diagnostic professionnels pour garages 2026 : Autel, Launch, Snap-on, Topdon, Foxwell comparés avec prix en euros, coûts d'abonnement annuel et coût total sur 5 ans. Couverture multimarque pour techniciens indépendants et garages spécialisés.
1 mars 202516 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.
10 février 202514 min
Guides
How Much Does P0420 Cost to Fix? Catalytic Converter Guide
P0420 repair cost runs from 150 euros for an oxygen sensor to 2,500 euros or more for a catalytic converter. Here is how to work out which repair you need.
20 janvier 202514 min
Guides
Meilleurs outils de diagnostic auto 2026 : prix, couverture multimarque et choix pour garages
Comparatif des meilleurs outils de diagnostic auto 2026 : scanners, applis, codage multimarque et tablettes pro. Prix réels en euros, de 30 € à 1 500 €.
30 août 202425 min