Condition for fault identification

Test condition:

The fault is recognized when the monitored pressure is less than the specified pressure.

Potential problem source(s):

• Boost-pressure sensor defective
• Defective electropneumatic pressure converter in wastegate valve
• Wastegate valve is defective (seized in open position)
• Air-induction tract between turbocharger and intake-air plenum has leak
• Vacuum line for controlling wastegate valve is defective

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• None

Time condition:

• None

Other conditions:

• Engine speed above 1900 RPM
• Engine load
• Turbocharger boost in control range