Code Definition

B1336 — Door Ajar RR Circuit Open

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

About B1336

B1336 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 B1336 is stored, the module has detected an open (broken or disconnected) electrical path 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.

B1336 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 right rear door ajar input through a switch (often integrated into the latch) that completes a path to ground when the door is open. DTC B1336 sets when the BCM detects that this circuit is permanently open, meaning the input never returns the expected ground signal even when the right rear door is operated. The most common physical cause is a broken conductor inside the rubber boot at the door pillar where decades of door cycling fatigue the copper, but a disconnected latch plug, an internally failed switch, or an open in a shared body splice will pr...

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