Diagnostic Aids

A vacuum leak or pinched vacuum line could cause DTC P0236 to set. Check all vacuum lines and components connected to hoses for leaks or sharp bends. Check vacuum source. Check for proper vacuum line routing.

The turbocharger wastegate actuator uses a pulse width modulated vacuum solenoid that causes vacuum to fluctuate under normal conditions. A steady vacuum reading indicates a restricted or plugged solenoid vent filter or solenoid vent orifice.