Technician A says that most TSBs involve a specific stored DTC. Technician B says that the ECT and IAT reading should be close to the same temperature after the vehicle sits for several hours. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

Question

Quizplus · Accepted Answer

Most Technical Service Bulletins (TSBs) do indeed involve a specific stored Diagnostic Trouble Code (DTC), as they are often issued to address common issues found in particular models, which can include specific fault codes. Technician B is correct because the Engine Coolant Temperature (ECT) sensor and the Intake Air Temperature (IAT) sensor should read similarly after the vehicle has been off for a few hours, reflecting the ambient temperature, indicating both sensors are functioning correctly.

Technician a Says That Most TSBs Involve a Specific Stored