OBD2 Fault Code Library

Free lookup for thousands of OBD2 trouble codes: filter by family, read short meanings, and open deeper articles. Desktop ELM327 scanner with live data and AI guidance.

OBD2 symptoms

Look up diagnostic trouble codes by what the car is doing: misfire, overheating, rough idle, a check engine light, and other common symptoms.

B2354 — OBD2 code B2354 flags a problem with the body electrical system (driver mirror horizontal / vertical feedback potentiometer circuit open). The car is usually drivable while you plan the repair. Common culprits: faulty switch, motor or actuator of the affected system, corroded or loose connectors, blown fuse or failed relay.
B2355 — B2355 — Passenger Mirror Horizontal / Vertical Feedback Potentiometer Circuit Open. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: blown fuse or failed relay, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
B2357 — Driver Window Down Current Sense Low Circuit Failure (B2357): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by damaged wiring in door jambs or wet areas, body control module (BCM) fault, faulty switch, motor or actuator of the affected system.
B2362 — OBD2 code B2362 flags a problem with the body electrical system (remote open/close signal circuit short to ground). The car is usually drivable while you plan the repair. Common culprits: blown fuse or failed relay, body control module (BCM) fault, faulty switch, motor or actuator of the affected system.
B2363 — Optical Sensor System Failure (B2363): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by blown fuse or failed relay, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
B2364 — Fuel Filler Door Circuit Open (B2364): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by blown fuse or failed relay, damaged wiring in door jambs or wet areas, body control module (BCM) fault.
B2365 — B2365 — B-pillar Power Sliding Door Open/Close Switch Input Ckt Short to Gnd. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: body control module (BCM) fault, blown fuse or failed relay, corroded or loose connectors.
B2366 — B2366 — IP Power Sliding Door Open/Close switch Ckt Short to Gnd. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: faulty switch, motor or actuator of the affected system, corroded or loose connectors, blown fuse or failed relay.
B2367 — Power Sliding Door Override Switch Input Ckt Short to Gnd (B2367): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by faulty switch, motor or actuator of the affected system, body control module (BCM) fault, damaged wiring in door jambs or wet areas.
B2368 — Steering Column Switch Circuit Out of Range (B2368): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by damaged wiring in door jambs or wet areas, blown fuse or failed relay, faulty switch, motor or actuator of the affected system.
B2369 — Chime OUTPUT Request Ckt Short to Ground (B2369): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by corroded or loose connectors, body control module (BCM) fault, damaged wiring in door jambs or wet areas.
B2373 — B2373 — LED #1 Circuit Short to Battery. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: blown fuse or failed relay, corroded or loose connectors, body control module (BCM) fault.
B2374 — OBD2 code B2374 flags a problem with the body electrical system (power sliding detent (Latch) circuit failure). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
B2380 — OBD2 code B2380 flags a problem with the engine cooling and temperature control (heater coolant temp sensor circuit short to GND). Short, gentle driving to a shop is usually possible. Common culprits: low coolant level or air in the system, water pump or radiator issues, thermostat stuck open or closed.
B2381 — OBD2 code B2381 flags a problem with the engine cooling and temperature control (heater coolant temp sensor circuit open). Short, gentle driving to a shop is usually possible. Common culprits: thermostat stuck open or closed, water pump or radiator issues, faulty coolant temperature sensor.
B2384 — OBD2 code B2384 flags a problem with the body electrical system (audio reverse aid mute input ckt failure). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas.
B2385 — B2385 — Audio Navigation Mute Input Ckt Failure. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: corroded or loose connectors, faulty switch, motor or actuator of the affected system, blown fuse or failed relay.
B2401 — B2401 — Audio Tape Deck Mechanism Fault. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: blown fuse or failed relay, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
B2402 — Audio CD/DJ Thermal Shutdown Fault (B2402): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by faulty switch, motor or actuator of the affected system, corroded or loose connectors, damaged wiring in door jambs or wet areas.
B2403 — Audio CD/DJ Internal Fault (B2403): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by faulty switch, motor or actuator of the affected system, body control module (BCM) fault, corroded or loose connectors.
B2404 — OBD2 code B2404 flags a problem with the body electrical system (audio steering wheel switch circuit fault). The car is usually drivable while you plan the repair. Common culprits: corroded or loose connectors, damaged wiring in door jambs or wet areas, faulty switch, motor or actuator of the affected system.
B2405 — B2405 — Audio Single-Disc CD Player Thermal Shutdown Fault. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: body control module (BCM) fault, corroded or loose connectors, damaged wiring in door jambs or wet areas.
B2406 — Audio Single-Disc CD Player Internal Fault (B2406): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by damaged wiring in door jambs or wet areas, body control module (BCM) fault, faulty switch, motor or actuator of the affected system.
B2416 — B2416 — Climate Control Recirculation Actuator Out of Limits. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: corroded or loose connectors, faulty switch, motor or actuator of the affected system, body control module (BCM) fault.