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Diagnostics

OBD2 scanning from first plug-in to reading live data: scanner and app reviews I’ve actually tested for a year, fuel trim interpretation, and sensor guides — all backed by real readings logged on my 1.0 TSI.

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White BMW X5 parked, featured in an article explaining dpf regeneration

DPF Regeneration: How Often Is Normal, How to Tell, and What to Do

Posted by By Ayush Sondhi August 16, 2026
DPF regeneration is the process where your diesel heats its exhaust filter and burns off the trapped soot, turning it into a small amount of ash. It happens automatically every…
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Car hard start when cold diagnostic guide

Car Hard Start When Cold: Why It Struggles Then Runs Fine

Posted by By Ayush Sondhi August 5, 2026
A car that struggles to start when cold but runs fine afterwards usually comes down to one of four things: a battery that has lost strength, a temperature sensor reading…
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Car battery illustration with frost in cold weather, next to the title Car Won't Start in the Cold, diagnose it from the sound in 30 seconds

Car Won’t Start in Cold? Diagnose It From the Sound in 30 Seconds

Posted by By Ayush Sondhi July 22, 2026
If your car won't start in cold weather, the cause is usually simple: in about half of all cases it's the battery, and most of the rest come down to…
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VAG fault code 01304 displayed on an OBD2 scanner

VAG Fault Code 01304 CAN Gateway: Causes and How to Fix It

Posted by By Ayush Sondhi June 30, 2026
VAG Fault code 01304 on a VW, Audi, Skoda or SEAT generally means the CAN Gateway has lost proper communication with the radio or head unit. It's usually not a…
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vgate-icar-pro-ble-4.0-scanner-review

Vgate iCar Pro BLE 4.0 Review: A Year On A VAG Car

Posted by By Ayush Sondhi June 23, 2026
This article contains affiliate links. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you. The Vgate iCar Pro BLE 4.0 is a reliable budget…
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how-far-can-you-drive-on-a-flat-tyre

How Far Can You Drive On A Flat Tyre? Safe Steps If You’re Stranded

Posted by By Ayush Sondhi June 1, 2026
There's no exact number of miles or kilometres you can safely drive on a flat tyre. You can drive as little as possible. Stop somewhere safe, then figure out your…
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EGR valve cleaning on a VAG diesel engine

EGR Valve Cleaning — DIY Guide for VW, Skoda and Audi (Without Removing It)

Posted by By Ayush Sondhi April 4, 2026
If your engine has developed a rough idle, hesitation, or a stubborn check engine light, the EGR system deserves attention before you start replacing parts. When diagnosing issues tied to…
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Best OBD2 app test setup — Vgate iCar Pro Bluetooth adapter plugged into Skoda Rapid OBD2 port

Best OBD2 App for Live Data – Tested on a 1.0 TSI With Actual Readings

Posted by By Ayush Sondhi March 27, 2026
This article contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Car Scanner is the best OBD2 app for the Vgate…
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symptoms of faulty o2 sensor

Symptoms of a Faulty O2 Sensor (How to Confirm Before Replacing)

Posted by By Ayush Sondhi February 25, 2026
The symptoms of a faulty O2 sensor range from a small drop in fuel economy to a persistent check engine light. Because the oxygen sensor directly controls how your engine…
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oil leak after oil change

Oil Leak After Oil Change — What’s Causing It and What to Do

Posted by By Ayush Sondhi February 23, 2026
A small oil drip immediately after an oil change is almost always a loose drain plug, an incorrectly fitted oil filter, or residual oil from the service dripping off engine…
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TheCarLane helps car owners understand warning lights, fault codes, and engine data before spending money at a garage. Independent, specialising in Volkswagen Group cars, and tested on my own car wherever possible.
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