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Haynes OBD2 engine management systems
on 24 January 2014
The mysterious electronics and black boxes under the bonnet simply explained and than are just plain sense.
Great book to understand car emissions and electrics. Explains in simple terms what every black box, sensor, actuator, etc does and how it works. Explains how to test all of the above with both multimeter and fault code reader/scan tool.
If you like to look after your own vehicles, get this book and a fault code reader and wave goodbye to main dealer and mechanics prices.
Although I didn't have an engine warning light on the dash, the car was not running right and using more fuel. By looking at the live data on a hand held scanner I was able to trace the problem to the O2 sensor.
Book took 10 days to arrive. Worth the wait.