The turbo charger uses exhaust energy to rotate the turbine. The turbine rotates the compressor to the axis in order to compress the intake air. The compressed intake air is cooled through the intercooler, and provided it with the engine. The efficiency of the engine increases (NA compared 30~40%) and also drops the quantity of harmful exhaust gas.
ECM sets DTC P0049 if the ECM detects that turbine speed of turbo charger is more than 172,000 rpm.
Item
Detecting Condition
Possible Cause
DTC Strategy
Plausibility check
Detected for following DTC check
Air leak in intake(Turbecharger to ETC)
Restriction in intake(Air Filter to Turbocharger)
WGT/RCV Control Air line check
Faulty RCV
Faulty PUT(Boost sensor)
Faulty Turbocharger
Enable Conditions
-
Threshold Value
Turbocharger speed > 172000rpm
Diagnostic Time
5 sec
Mil On Condition
2 Driving cycles