Code Definition

P2033 — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2

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

About P2033

P2033 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 P2033 is stored, the module has detected a signal or supply voltage higher than the expected operating range; a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; 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 P2033 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 exhaust gas temperature sensor is a thermistor whose resistance falls as exhaust temperature rises, and the ECM applies a reference voltage through a fixed pull up resistor and reads the resulting signal voltage to derive temperature. Sensor 2 on bank 1 sits downstream of sensor 1, typically between the oxidation catalyst and the DPF on diesel applications or after the catalytic converter on petrol turbo engines. P2033 sets when the ECM sees signal voltage above its plausibility limit, commonly around 3.3V or higher, held for longer than about one second, which corresponds to an implausibl...

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