OBD-II Fault Code

B2237: Vehicle Signal indicating Park While VSS Present

Meaning, symptoms, likely causes, diagnostic checks and repair guidance for B2237.

System family

Body

Generic/SAE

Repair category

Speed sensor

Use this category to narrow your checks before replacing parts.

Severity

Medium

Severity is a general guide. Confirm with scan-tool data and vehicle symptoms.

What B2237 usually means

Vehicle Signal indicating Park While VSS Present.

Common symptoms

Body/accessory warning lamp or feature not working

Likely causes

Faulty speed sensor; Damaged tone wheel; Wiring fault; ABS/TCM data issue

Diagnostic checks

Check related fuses, connectors, grounds and switch/module power supply; Compare live speed data from relevant modules; Inspect sensor and harness

Repair guidance

Repair wiring or replace confirmed faulty sensor/tone wheel

Verification after repair

Operate the affected body/accessory system and rescan

Note: Confirm vehicle make/model/year because manufacturer-specific codes can vary. A DTC identifies a circuit or system condition, not always the failed part.