Code Definition

P00AB — Intake Air Temperature Sensor Signal Out of Range - Bank 2 - Sensor 1

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

About P00AB

P00AB 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 P00AB 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; 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 P00AB 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 P00AB fault code is set when the Engine Control Module (ECM) detects that the signal from the first Intake Air Temperature (IAT) sensor in Bank 2 is out of the expected range or is performing abnormally. This sensor measures the temperature of the air entering the engine's intake system, providing crucial data for the ECM to accurately calculate air density. Proper air density information is vital for optimising the air-fuel mixture, ignition timing, and other engine management decisions. In engines with multiple cylinder banks, such as V6 or V8 engines, Bank 2 refers to the second group o...

Join TaT to view the complete code information and diagnostic details.

Quick Facts