Code Definition

B1333 — Decklid Ajar Rear Door Circuit Short To Battery

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

About B1333

B1333 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1333 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

B1333 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 Body Control Module (BCM) monitors the status of the decklid or rear door via an ajar switch that signals the module when the lid or door is open or closed. DTC B1333 sets when the BCM detects that the ajar input circuit is being held at battery voltage when it should be switching between ground and an open condition. This is typically caused by chafed wiring contacting a positive supply, a stuck or shorted ajar switch, or a fault in a related body harness branch. When this code is active, the vehicle may display a permanent decklid or door ajar warning on the dash, the interior courtesy l...

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