Code Definition

P0248 — Turbocharger Wastegate Solenoid B Range/Performance

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

About P0248

P0248 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 P0248 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

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 P0248 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 P0248 fault code is set when the Engine Control Module (ECM) detects that the range or performance of the Turbocharger Wastegate Solenoid B is outside the expected parameters. This solenoid is typically found in vehicles with multiple turbochargers or a twin-turbo setup and is responsible for controlling the wastegate valve, which regulates the boost pressure from the turbocharger. Proper functioning of this solenoid is essential to maintain the desired boost pressure within the engine's safe operational limits. Issues with the solenoid's range or performance can lead to improper turbochar...

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