01 P0038 H02S heater control circuit high (Bank 1 sensor 2) • 02 U0001 High Speed CAN Communication Bus • 03 Why Engine Capacity Matters When Shopping For A New Car • 04 P0101 - Mass Air Flow (MAF) Sensor Performance • 05 What Mechanics Check First When Fuel Usage Suddenly Spikes • 06 What You Need to Know: Driving with the ABS Light On and Ho… • 07 Petrol vs Diesel: This is Why You Should Consider a Petrol … • 08 P0031 H02S heater control circuit low (Bank 1 sensor 1) • 09 Transmission Problems: Causes, Symptoms, and Solutions • 10 Car Vibrates When AC is On: A Complete Guide to Diagnosis a… •

AV-SCANNER guides

Scanner Guides

Every guide behind the AV-SCANNER's Service Function, IMMO and Accessories apps, in one place. Read them online or download each one as a PDF for the workshop.

186Service functions
30IMMO and keys
69Accessories
ACC-178 · Engine and fuel

Compression Tester

Run dry and wet compression tests

Intermediate 60 to 90 minutes PDF
ACC-179 · Engine and fuel

Cylinder Leak-Down Tester

Find exactly where a cylinder loses pressure

Professional 45 to 90 minutes PDF
ACC-180 · Engine and fuel

Fuel Pressure Gauge Kit

Test petrol fuel pressure safely

Intermediate 45 to 90 minutes PDF
ACC-181 · Engine and fuel

Vacuum Gauge

Read engine health from manifold vacuum

Intermediate 30 to 60 minutes PDF
ACC-182 · Engine and fuel

Timing Light

Check ignition timing on older engines

Intermediate 30 to 60 minutes PDF
ACC-183 · Engine and fuel

Spark Plug Tester

Confirm ignition spark safely

Intermediate 30 to 60 minutes PDF
ACC-184 · Engine and fuel

Torque Wrench

Choose, use and look after a torque wrench

Intermediate 30 to 60 minutes PDF
ACC-185 · Engine and fuel

Oil Pressure Gauge Kit

Measure real engine oil pressure

Intermediate 45 to 90 minutes PDF
ACC-186 · Engine and fuel

Boost Leak Tester

Pressure test a turbocharged intake

Intermediate 45 to 90 minutes PDF
ACC-187 · Engine and fuel

Fluid Extractor

Remove oil and fluids from above

Intermediate 30 to 60 minutes PDF
ACC-188 · Engine and fuel

Timing Tool Set

Why engines need timing tools and how to use them

Professional 4 to 8 hours PDF
ACC-189 · Engine and fuel

Diesel Injector Leak-Off Tester

Compare injector return flow

Intermediate 45 to 90 minutes PDF
ACC-273 · Engine and fuel

Oil Filter Wrench Set

Choose the right wrench for tight filters

Intermediate 30 to 60 minutes PDF
ACC-274 · Engine and fuel

Spark Plug Socket and Gap Tool

Remove, gap and refit plugs properly

Intermediate 45 to 90 minutes PDF
ACC-275 · Engine and fuel

Valve Spring Compressor

Service valves safely

Professional 2 to 4 hours PDF
ACC-276 · Engine and fuel

Engine Hoist and Stand

Lift and support an engine safely

Intermediate 2 to 4 hours PDF
ACC-277 · Engine and fuel

Piston Ring Compressor

Fit pistons without damaging rings

Intermediate 45 to 90 minutes PDF

Use them with the AV-SCANNER

Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.

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Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage