Comprehensive Diagnostic Guide for OBD-II Code B2055

• B codes are "Body" category DTCs. The exact description of a B2055 code is not universal; it is typically defined in the manufacturer's OEM DTC library. The standard OBD-II framework covers that DTCs exist, use a 5-character format, and that codes are organized by system (P = Powertrain, B = Body, C = Chassis, U = Network) and that many details vary by manufacturer.
• Because B2055 is not a universal, vehicle-agnostic description, this guide emphasizes a robust, OEM-oriented diagnostic approach applicable to unknown or manufacturer-specific B-body codes.

1) Code context: what B2055 likely represents (general framework)

• Code type: B (Body) DTC, 5-digit alphanumeric after the B prefix.
• Nature of the code: Most B codes are related to body electrical systems such as lighting, occupant sensing, door modules, HVAC, power accessories, airbags/occupant classification, or other body-control modules.
• Verification step you must perform: Look up the exact OEM description for B2055 in the vehicle's manufacturer DTC library or service information system (SIS). The generic OBD-II dictionary does not provide the exact symptom description for B2055; you need the OEM definition to pinpoint the subsystem and exact fault condition. This aligns with the principle that "the exact meaning of B2055 is manufacturer-specific" as discussed in the general OBD-II code discussions.

2) Typical customer symptom patterns that might accompany B-body codes

Note: These are common symptom clusters seen with body-system DTCs in the field and are provided to help you recognize probable symptom timing and focus your tests. They are not guaranteed for B2055 specifically, since OEM definitions vary.

• MIL illumination with intermittent body-system faults (no obvious driveability loss)
• Intermittent operation of a body function (e.g., one or more power accessories such as power windows, seats, door locks, or interior lighting)
• HVAC system anomalies (unwanted blower behavior, erratic temperature control, or control panel irregularities)
• Airbag/occupant detection or restraint-system indicators (if the body module is involved) with a caution that airbag systems require strict safety procedures
• Dimming or flickering instrument cluster or body control module communications indicators

This diagnostic guide was generated using verified reference data:

• Wikipedia Technical Articles: OBD-II

Content synthesized from these sources to provide accurate, real-world diagnostic guidance.

---