Code Definition

B1207 — EIC Switch-1 Assembly Circuit Short To Battery

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

About B1207

B1207 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 B1207 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.

B1207 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 Electronic Integrated Control (EIC) module monitors the Switch 1 assembly circuit by reading the voltage on the switch signal input against a defined range of expected values. DTC B1207 sets when the module detects battery voltage on the switch input where the reading should have been at a lower switch reference level, indicating the signal wire has become shorted to a 12V source somewhere in the circuit. A short to battery condition typically results from chafed insulation allowing the signal wire to contact a live conductor, a pinched harness crushing against a powered terminal, or an in...

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