Code Definition

B1627 — PRNDL Reverse Input Circuit Failure

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

About B1627

B1627 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 B1627 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.

B1627 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 B1627 diagnostic trouble code indicates that the Body Control Module or Powertrain Control Module has detected a failure in the PRNDL (Park, Reverse, Neutral, Drive, Low) reverse input circuit. The PRNDL switch, also known as the Transmission Range or Neutral Safety Switch, sends discrete signals to the control modules indicating gear selector position, with each gear completing a unique combination of input circuits. When the reverse position circuit reports an invalid signal pattern, voltage out of range, or remains inconsistent with the other PRNDL inputs, the module sets this code. Dri...

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