Code Definition

B1033 — Crash Zone Sensor Circuit Fault

System: Body  |  Type: Manufacturer-Specific  |  Make: Nissan

About B1033

B1033 is a manufacturer-specific body diagnostic trouble code recorded for Nissan vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1033 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.

B1033 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Airbag Control Unit (ACU) continuously monitors the crash zone sensor circuits for correct communication, voltage supply, earth integrity, and internal sensor status. DTC B1033 is set when the ACU detects an open circuit, short to power, short to earth, or invalid/no signal from the crash zone sensor during self-diagnosis or while the vehicle is operating. When this fault is present, the SRS is disabled to prevent incorrect or unintended airbag deployment, and the airbag warning lamp is illuminated.

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