So you want to be a automotive tech Is there any security in being a auto technician these days?

Where are we headed ???? The Average Ford 2003 2013 15 Modules 60 over a ten year period 2003 2013 15 Modules 60 (micro computers) 2-3 million Lines of Software code 10 million

Catalyst System Efficiency Below Threshold Bank 1 What if that Ford set a code P0420 Catalyst System Efficiency Below Threshold Bank 1 According to Ford Service Info there are only 13 possible causes

That can take you under the car That can take you Under the car Exhaust manifold Catalytic Converter Tailpipe H02S Or under the hood ECT sensor Oil Contamination Cylinder misfiring Fuel Injectors Timing or even to the fuel type (leaded)

to figure out the problem If you want to go from 13 potential causes to the fix......... You NEED a technicain to figure out the problem unless you diagnose the underlying problem, the code will continue to be set time after time.

Remember the KISS principal ? most systems work best if they are kept simple rather than made more complex seeing that automotive engineers are moving away from the KISS principal That sure sounds like job security to me.