Code Definition

P0236 — Turbocharger Boost Sensor A Circuit Range/Performance

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

About P0236

P0236 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 P0236 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; and a sensor-related fault — the reported value from the named sensor is out of spec.

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 P0236 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 P0236 fault code is set when the Engine Control Module (ECM) detects that the range or performance of the Turbocharger Boost Sensor A is outside of the expected parameters. This sensor, also known as the boost pressure sensor, is responsible for measuring the pressure produced by the turbocharger and relaying this information to the ECM. The ECM uses these data to regulate engine performance, including fuel injection and ignition timing. Deviations in the sensor's range or performance can lead to issues such as poor engine performance, irregular acceleration, or even engine knock. Causes m...

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