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No boost
Electrical connections and harnesses to the Restricted air intake system Charge air cooler restricted/leaking Turbocharger actuator failure(s) Turbocharger failure(s) ECM failure
Check the electrical connections and harnesses to the turbocharger(s). Check the air intake for restriction/leakage (see visual inspection). For air intake checks, Intake Air Distribution and Filtering For turbocharger actuator tests, GO to Pinpoint Test G552276p2. and GO to Pinpoint Test G552276p3. For turbocharger mechanical checks, GO to Pinpoint Test G552276p1. Refer to the warranty policy and procedures manual if an ECM is suspect.
No boost/excessive noise
Turbocharger failure
For turbocharger mechanical checks, GO to Pinpoint Test G552276p1.
DTC index NOTE:
Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).
NOTE:
For a full list of powertrain DTCs, Electronic Engine Controls
DTC
Condition
Possible source
Action
P004500 Variable geometry turbocharger (VGT) actuator open circuit (right hand bank)
VGT actuator circuit: high resistance VGT actuator circuit: short circuit to VGT actuator failure ECM failure
For right hand bank VGT actuator circuit tests, GO to Pinpoint Test G552276p2. Refer to the warranty policy and procedures manual if an ECM is suspect.
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