Injector 4, supply voltage – short circuit
Injector 3, supply voltage – circuit malfunction
Injector 3, supply voltage – short circuit
Injector 2, supply voltage – circuit malfunction
Injector 2, supply voltage – short circuit
Injector 1, supply voltage – circuit malfunction
Injector 1, supply voltage – short circuit
Nitrogen oxides (NOx) heater sensor – open circuit
Nitrogen oxides (NOx) heater sensor – short to ground
Nitrogen oxides (NOx) heater sensor – short to positive
