Code Definition

B0160 — Ambient air temperature sensor signal error

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

About B0160

B0160 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0160 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B0160 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

DTC B0160 sets when the HVAC or body control module detects an erratic, noisy or rationally invalid signal from the ambient air temperature (AAT) sensor — the signal is electrically present but does not behave the way a valid temperature reading should. The AAT sensor is a negative temperature coefficient thermistor, normally located behind the front grille or below the front bumper, that feeds outside air temperature data to the climate control system, the dashboard temperature display and various engine and transmission compensation strategies. Unlike a hard out-of-range fault, B0160 is ty...

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