Code Definition

B1C83 (14) — Heated Rear Window Relay Coil Circuit – Circuit Short to Ground or Open

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

About B1C83

B1C83 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 B1C83 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and 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.

B1C83 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) controls the heated rear window by energising the coil of a heated rear window relay, which switches battery current to the rear glass element when the demister is requested. DTC B1C83:14 is set when the BCM detects an electrical fault on the relay coil control circuit, specifically a short to ground or an open circuit on the low side driver output. The BCM monitors the voltage state on this output and compares it to the commanded state, so any disagreement between the command and the measured voltage flags this code. When the code is active the heated rear window...

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