Code Definition

B1313 — Battery Saver Relay Coil Circuit Failure

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

About B1313

B1313 is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1313 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B1313 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), Generic Electronic Module (GEM), or equivalent module controls the battery saver relay coil through a low side driver to power down accessory circuits such as interior courtesy lamps and dome lamps after a programmed time delay, preventing battery drain when the vehicle is left switched off. DTC B1313 is set when the controlling module detects an electrical fault on the relay coil drive circuit, such as an open circuit, short to ground, or short to battery voltage. The module monitors the voltage at the coil drive pin to confirm the relay is operating correctly w...

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

Quick Facts