Code Definition

P0458 — Canister Purge solenoid Circuit low

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

About P0458

P0458 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 P0458 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 P0458 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

The ECM sets P0458 when it detects a lower-than-expected voltage in the canister purge solenoid circuit. This typically indicates a short to ground, an open circuit, or a problem with the solenoid's power supply. The purge solenoid controls the flow of fuel vapours from the charcoal canister to the intake manifold for combustion.

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