Fault code lookup

BodyB1863

Caution

Severity: Caution - get it checked when you can

BT Communication error

17 brands affected · Description from Toyota data.

Key terms: Control module: a small computer that runs one part of the car

1What it means in plain English

A body system has a fault. Depending on the make, this range can include airbags and seat belts, windows, locks and climate control, and also charging, brake, oil or coolant sensors.

2Common causes

  1. Wiring or connector fault
  2. Faulty sensor or switch
  3. Water or corrosion in a connector
  4. Control module fault
  5. Low battery voltage

3Can I drive?

Caution · drive with care

Do not assume this code is safe to drive. If it concerns the brakes, brake vacuum, charging/alternator, engine oil or coolant, have it diagnosed before driving. Airbags or seat belts may not work in a crash, and a brake or charging fault can leave the car unsafe or stranded. For convenience systems (windows, locks, climate), have it checked when convenient.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 17

BrandCodeDescriptionSystem
Mercedes-BenzB1863No description available Body
DaewooB1863No description available Body
DaihatsuB1863D seat knee airbag power supply short BrandBody
DFFSB1863BT Communication error BrandBody
GMB1863No description available Body
HoldenB1863No description available Body
Land RoverB1863No description available Body
MitsubishiB1863e-Call ECU fail BrandBody
OpelB1863No description available Body
PeroduaB1863D seat knee airbag power supply short BrandBody
PeugeotB1863No description available Body
ProtonB1863e-Call ECU fail BrandBody
SaabB1863No description available Body
SprinterB1863No description available Body
SubaruB1863No description available Body
SuzukiB1863Front-Right Parking Sensor BrandBody
ToyotaB1863BT Communication error BrandBody

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 5

These 7-character codes are manufacturer-specific variants of B1863 and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzB186300Das Steuergerät 'Leuchtdiodenband' im Cockpit links hat Funktionsstörung. BrandBody
Mercedes-BenzB186345Das Steuergerät 'Leuchtdiodenband' im Cockpit links hat Funktionsstörung. Es liegt ein Fehler im Programmspeicher vor. BrandBody
Mercedes-BenzB186398Das Steuergerät 'Leuchtdiodenband' im Cockpit links hat Funktionsstörung. Die Komponente oder das System hat Übertemperatur. BrandBody
Mercedes-BenzB18639AControl unit 'Light-emitting diode strip' in the left cockpit has a malfunction. The operating conditions for the component or the system are not satisfied. BrandBody
PorscheB1863F0SV left camera voltage supply - voltage to high / to low BrandBody

6Related codes

Browse Bxxx codes or B186xx codes.

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