Code Definition

P00A5 — Intake Air Temperature Sensor Signal Error - Bank 2 - Sensor 2

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

About P00A5

P00A5 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 P00A5 is stored, the module has detected 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 P00A5 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 P00A5 fault code is set when the Engine Control Module (ECM) detects an error in the signal from the second Intake Air Temperature (IAT) sensor in Bank 2 of the engine. This sensor measures the temperature of the air entering the engine's intake system and is crucial for the ECM to calculate the air density and adjust the air-fuel mixture, ignition timing, and other engine parameters for optimal performance and efficiency. In engines with two banks (like V6, V8, or other multi-cylinder configurations), Bank 2 refers to the second group of cylinders. An error in the IAT sensor signal can le...

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