Code Definition

B1622 — Wiper Rear Low Limit Input Circuit Short To Ground

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

About B1622

B1622 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 B1622 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit; and a signal or supply voltage lower than the expected operating range.

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.

B1622 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 B1622 code is set by the Generic Electronic Module (GEM) on Ford vehicles when the rear wiper low limit input is shorted to chassis ground. The low limit input is the park position feedback signal from the rear wiper motor, normally seen by the GEM as a defined reference state that is briefly pulled to ground each time the wiper passes through park. A persistent short to ground holds the input below the GEM threshold continuously and is logged as an electrical fault. When this code is set, the rear wiper may behave as if it is always at park, may fail to run, or may stop unpredictably duri...

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

Quick Facts