Diagnostic comparisons

Compare OBD codes and concepts

Upstream vs downstream O2 sensor

Bank 1 vs Bank 2

OBD1 vs OBD2: scope

Diagnostic knowledge search

23,879 code identifiers with scoped meanings, and 54,261 enhanced signal definitions. No VIN or personal information is needed.

Diagnostic explainers

Pending, stored and permanent codes · Enhanced PIDs and Mode 22

Code or signal meaning

Reference

Brand context

23,879 matches

Page 387 · 11581–11610 shown

B1790

Autolamp Sensor Input Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1791

Autolamp Sensor Input Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1792

Autolamp Sensor Input Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1793

Autolamp Sensor Input Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1794

Lamp Headlamp Low-Beam Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1795

Lamp Headlamp Low-Beam Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1796

Lamp Headlamp Low-Beam Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1797

Lamp Headlamp Low-Beam Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1798

Lamp Turn Signal Front Output Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1799

Lamp Turn Signal Front Output Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1800

Lamp Turn Signal Front Output Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B180000

Обнаружение бокового удара (для разблокировки дверей транспортных средств без подушки SAB)

1 reference families · Genesis / Hyundai / Kia

B1801

Lamp Turn Signal Front Output Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1802

Lamp Turn Signal Rear Output Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1803

Lamp Turn Signal Rear Output Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1804

Lamp Turn Signal Rear Output Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1805

Lamp Turn Signal Rear Output Circuit Short To Ground

6 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

B1806

Lamp Tail Output Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1807

Lamp Tail Output Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1808

Lamp Tail Output Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1809

Lamp Tail Output Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1810

Lamp Backup Switch Input Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1811

Lamp Backup Switch Input Circuit Open

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1812

Lamp Backup Switch Input Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1813

Lamp Backup Switch Input Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1814

Wiper Rear Motor Down Relay Coil Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1815

Wiper Rear Motor Down Relay Coil Circuit Open

6 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

B1816

Wiper Rear Motor Down Relay Coil Circuit Short To Battery

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1817

Wiper Rear Motor Down Relay Coil Circuit Short To Ground

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

B1818

Wiper Rear Motor Up Relay Coil Circuit Failure

5 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton

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OBD Lens reference library · catalog legacy-owner-2026-11-02-v84-evidence. Sources and scope