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Which of these OBD (on-board diagnostic) codes are also vital for technicians to validate before returning a vehicle to the customer?
Q9: What causes the pressure to drive the
Q14: Pilot injection, also called split-shot injection, in
Q20: Before returning a vehicle to the customer
Q22: Technician A says that VGT engines can
Q28: Diesel particulate filters, which trap soot emissions,
Q29: Which of the following is NOT a
Q30: Which of the following sensors measure the
Q35: Technician A says that diesel engines use
Q36: Diesel fuel is also produced by liquefying
Q47: Which of these results in higher pre-ignition