Check Engine Light

What is your question?

The engine harness on my 1994 E320 Mercedes-Benz got short circuit after a shop changed my serpentine belt. The impulse counter "Led Blinks" 18 "Adjustable camshaft solenoid or short circuit and 22 times cam position sensor signal defective. It is my understanding that once a shop start moving or bumping the engine wiring harness around you disturb the crumbling insulation on the engine wiring harness and short circuit occur. My question is can a shop repair a short circuit engine harness with out having to replace the engine harness.