BodyB1684

Caution

Severity: Caution - get it checked when you can

OCS system fault

9 brands affected · Description from BYD 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

Wiring or connector fault
Faulty sensor or switch
Water or corrosion in a connector
Control module fault
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 9

Brand	Code	Description	System
Mercedes-Benz	B1684	No description available	Body
BYD	B1684	OCS system fault Brand	Body
Hyundai	B1684	No description available	Body
Maserati	B1684	Left Headlamp Leveling Motor Control-Commanded Position Not Reachable Brand	Body
Mitsubishi	B1684	F ABG(3)PS active circuit short Brand	Body
Proton	B1684	F ABG(3)PS active circuit short Brand	Body
Subaru	B1684	No description available	Body
Suzuki	B1684	CAN Invalid Data from P/S Control Module Brand	Body
Toyota	B1684	No description available	Body

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 B1684 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	B168400	If ACU configuration is different with vehicle configuration, SRSCM sets DTC Brand	Body
SsangYong	B168400	Detected Incorrect Airbag Installation Brand	Body
Mercedes-Benz	B168401	Der Stellmotor für die Leuchtweitenregulierung links hat Funktionsstörung. Es liegt ein allgemeiner elektrischer Fehler vor. Brand	Body
Mercedes-Benz	B168416	Der Stellmotor für die Leuchtweitenregulierung links hat Funktionsstörung. Spannungsgrenzwert ist unterschritten. Brand	Body
Mercedes-Benz	B168487	Der Stellmotor für die Leuchtweitenregulierung links hat Funktionsstörung. Botschaft fehlt. Brand	Body

6Related codes

Browse Bxxx codes or B168xx codes.