Code Definition

P005E — Turbo/Super Charger Boost Control Supply Voltage Circuit Low - Circuit B

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P005E

P005E is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P005E is stored, the module has detected a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P005E is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

Forced induction systems supply their boost control solenoids and electric actuators from a switched voltage feed, taken either from the main relay, a dedicated boost control relay, or an internal supply driver within the Engine Control Module (ECM). Circuit B identifies the second of these supply feeds, which typically serves the second turbocharger, the opposite bank of wastegate or vane actuators, or a separate electric boost actuator, and the ECM continuously measures the voltage present on that feed and compares it against system voltage. DTC P005E is set when the monitored supply voltage...

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