Code Definition

B1898 — Chime Input #2 Circuit Short to Ground

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

About B1898

B1898 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 B1898 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.

B1898 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) monitors several discrete chime input switches (such as headlights on, key in ignition, door ajar, seat belt unbuckled) and energises the warning chime when one or more conditions are active. DTC B1898 is set when the BCM detects that Chime Input #2 has gone to a low voltage state (close to 0V) at a time when the input should be at the BCM pull up voltage, indicating the input wire or its associated switch has shorted to ground or is stuck closed. The specific physical input assigned to Chime Input #2 varies by manufacturer and platform and should be confirmed fro...

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