Code Definition

P00B2 — Radiator Temperature Sensor Signal Out of Range

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

About P00B2

P00B2 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 P00B2 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 P00B2 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 fault code P00B2 is activated when the Engine Control Module (ECM) detects that the signal from the radiator temperature sensor is outside the expected range. This could mean that the sensor is reading temperatures that are either too high or too low compared to what is considered normal operating range. This discrepancy can arise from sensor malfunctions, circuit issues, or actual extreme temperature conditions. The radiator temperature sensor plays a crucial role in monitoring the coolant temperature, and an out-of-range signal can lead to improper engine cooling management.

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