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.

• Engine misfire
• Engine overheating
• Rough idle
• Check engine light
• Poor fuel economy
• Hard starting
• Engine stalling
• Catalytic converter efficiency
• Oxygen sensor fault
• EVAP leak
• Thermostat not reaching temperature
• Lean air-fuel mixture
• Rich air-fuel mixture
• EGR flow fault
• Engine knock
• Charging system
• Throttle position
• Mass airflow sensor
• Turbo underboost
• Coolant temperature sensor
• Transmission fault

• B1704 — Seat Driver Recline Forward Switch Circuit Short To Ground (B1704): a body electrical fault affecting the body electrical system. The car is usually drivable while you plan the repair. Most often caused by body control module (BCM) fault, faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas.
• B1705 — OBD2 code B1705 flags a problem with the body electrical system (seat driver recline rearward switch circuit failure). The car is usually drivable while you plan the repair. Common culprits: corroded or loose connectors, damaged wiring in door jambs or wet areas, body control module (BCM) fault.
• B1706 — B1706 — Seat Driver Recline Rearward Switch Circuit Open. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: damaged wiring in door jambs or wet areas, body control module (BCM) fault, blown fuse or failed relay.
• B1707 — OBD2 code B1707 flags a problem with the body electrical system (seat driver recline rearward switch circuit short to battery). The car is usually drivable while you plan the repair. Common culprits: corroded or loose connectors, damaged wiring in door jambs or wet areas, blown fuse or failed relay.
• B1708 — Seat Driver Recline Rearward Switch Circuit Short To Ground (B1708): 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, corroded or loose connectors, faulty switch, motor or actuator of the affected system.
• B1709 — B1709 — Seat Driver Front Up Switch Circuit Failure. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: damaged wiring in door jambs or wet areas, corroded or loose connectors, body control module (BCM) fault.
• B1710 — OBD2 code B1710 flags a problem with the body electrical system (seat driver front up switch circuit open). The car is usually drivable while you plan the repair. Common culprits: blown fuse or failed relay, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
• B1711 — OBD2 code B1711 flags a problem with the body electrical system (seat driver front up switch circuit short to battery). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, damaged wiring in door jambs or wet areas, faulty switch, motor or actuator of the affected system.
• B1712 — OBD2 code B1712 flags a problem with the body electrical system (seat driver front up switch circuit short to ground). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, corroded or loose connectors, blown fuse or failed relay.
• B1713 — Seat Driver Front Down Switch Circuit Failure (B1713): 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, damaged wiring in door jambs or wet areas, corroded or loose connectors.
• B1714 — B1714 — Seat Driver Front Down Switch Circuit Open. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: damaged wiring in door jambs or wet areas, faulty switch, motor or actuator of the affected system, blown fuse or failed relay.
• B1715 — B1715 — Seat Driver Front Down Switch Circuit Short To Battery. 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.
• B1716 — OBD2 code B1716 flags a problem with the body electrical system (seat driver front down switch circuit short to ground). The car is usually drivable while you plan the repair. Common culprits: damaged wiring in door jambs or wet areas, body control module (BCM) fault, corroded or loose connectors.
• B1717 — OBD2 code B1717 flags a problem with the body electrical system (seat driver forward switch circuit failure). The car is usually drivable while you plan the repair. Common culprits: blown fuse or failed relay, corroded or loose connectors, faulty switch, motor or actuator of the affected system.
• B1718 — OBD2 code B1718 flags a problem with the body electrical system (seat driver forward switch circuit open). The car is usually drivable while you plan the repair. Common culprits: blown fuse or failed relay, faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas.
• B1719 — OBD2 code B1719 flags a problem with the body electrical system (seat driver forward switch circuit short to battery). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, damaged wiring in door jambs or wet areas, blown fuse or failed relay.
• B1720 — Seat Driver Forward Switch Circuit Short To Ground (B1720): 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, corroded or loose connectors, faulty switch, motor or actuator of the affected system.
• B1721 — OBD2 code B1721 flags a problem with the body electrical system (seat driver rearward switch circuit failure). The car is usually drivable while you plan the repair. Common culprits: corroded or loose connectors, blown fuse or failed relay, body control module (BCM) fault.
• B1722 — Seat Driver Rearward Switch Circuit Open (B1722): 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, faulty switch, motor or actuator of the affected system, blown fuse or failed relay.
• B1723 — B1723 — Seat Driver Rearward Switch Circuit Short To Battery. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: corroded or loose connectors, blown fuse or failed relay, faulty switch, motor or actuator of the affected system.
• B1724 — OBD2 code B1724 flags a problem with the body electrical system (seat driver rearward switch circuit short to ground). 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, blown fuse or failed relay.
• B1725 — Seat Driver Rear Up Switch Circuit Failure (B1725): 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, corroded or loose connectors, faulty switch, motor or actuator of the affected system.
• B1726 — OBD2 code B1726 flags a problem with the body electrical system (seat driver rear up switch circuit open). The car is usually drivable while you plan the repair. Common culprits: damaged wiring in door jambs or wet areas, blown fuse or failed relay, faulty switch, motor or actuator of the affected system.
• B1727 — OBD2 code B1727 flags a problem with the body electrical system (seat driver rear up switch circuit short to battery). The car is usually drivable while you plan the repair. Common culprits: corroded or loose connectors, blown fuse or failed relay, faulty switch, motor or actuator of the affected system.