Code Definition

B10D0 (11) — Trunk Lid Opener Switch Circuit Malfunction

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

About B10D0

B10D0 is a manufacturer-specific body diagnostic trouble code recorded for Mazda vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B10D0 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.

B10D0 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) on Mazda vehicles provides a pull up reference voltage to the trunk lid opener switch (the interior trunk release button, or the exterior touch pad on the trunk lid, depending on model) and monitors the switch input for the expected voltage change when the switch is pressed. DTC B10D0 with failure type 11 is logged when the BCM detects that the trunk lid opener switch signal circuit is shorted to ground, meaning the input reads pulled to ground at times when the switch should be released and the line should sit at its reference voltage. This condition typically ca...

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

Quick Facts