Code Definition

B1612 — Wiper Rear Mode Select Switch Circuit Open

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

About B1612

B1612 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 B1612 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.

B1612 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 B1612 code is set by the Generic Electronic Module (GEM) on Ford vehicles when an open circuit is detected in the rear wiper mode select switch wiring. The rear wiper mode select switch sends a signal to the GEM indicating which rear wiper function the driver has selected (off, intermittent, on, or wash), and the GEM monitors this circuit continuously for proper operation. When the GEM detects that the switch input is electrically disconnected from the expected reference, this code is stored. When this code is set, the rear wiper system will typically not respond to the switch and may defa...

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