- D01 ENGINE NOT RUNNING SMOOTHLY / (HESISTANT)
 - D02 ENGINE NOT RUNNING SMOOTHLY / (LOSING POWER)
 - D03 ENGINE NOT RUNNING SMOOTHLY / (IRREGULAR OPERATION)
 - D04 ENGINE NOT RUNNING SMOOTHLY
 - D05 ENGINE DOES NOT PRODUCE BEST PERFORMANCE
 - D10 ENGINE IDLE IRREGULAR
 - D21 ENGINE CUTS OUT WHILST DRIVING
 - D70 CRUISE CONTROL NOT WORKING UNDER ANY CONDITIONS