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

• B1752 — Park/Neutral Switch Circuit Short To Ground (B1752): 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, corroded or loose connectors, body control module (BCM) fault.
• B1753 — OBD2 code B1753 flags a problem with the body electrical system (hazard flash output circuit failure). The car is usually drivable while you plan the repair. Common culprits: faulty switch, motor or actuator of the affected system, body control module (BCM) fault, damaged wiring in door jambs or wet areas.
• B1754 — OBD2 code B1754 flags a problem with the body electrical system (hazard flash output circuit open). 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.
• B1755 — Hazard Flash Output Circuit Short Battery (B1755): 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, blown fuse or failed relay, faulty switch, motor or actuator of the affected system.
• B1756 — Hazard Flash Output Circuit Short To Ground (B1756): 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, corroded or loose connectors, body control module (BCM) fault.
• B1757 — Seat Driver Rear Down Circuit Failure (B1757): 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, body control module (BCM) fault.
• B1758 — Seat Driver Rear Down Circuit Open (B1758): 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.
• B1759 — B1759 — Seat Driver Rear Down 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, damaged wiring in door jambs or wet areas, body control module (BCM) fault.
• B1760 — Seat Driver Rear Down Circuit Short To Ground (B1760): 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, corroded or loose connectors, blown fuse or failed relay.
• B1761 — B1761 — Seat Driver Front Down Circuit Failure. 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.
• B1762 — Seat Driver Front Down Circuit Open (B1762): 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, faulty switch, motor or actuator of the affected system, corroded or loose connectors.
• B1763 — B1763 — Seat Driver Front Down 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.
• B1764 — OBD2 code B1764 flags a problem with the body electrical system (seat driver front down circuit short to ground). 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.
• B1765 — Seat Driver Forward Circuit Failure (B1765): 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.
• B1766 — B1766 — Seat Driver Forward Circuit Open. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: body control module (BCM) fault, damaged wiring in door jambs or wet areas, blown fuse or failed relay.
• B1767 — B1767 — Seat Driver Forward Circuit Short To Battery. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas.
• B1768 — OBD2 code B1768 flags a problem with the body electrical system (seat driver forward circuit short to ground). 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.
• B1769 — B1769 — Seat Driver Backward Circuit Failure. 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, blown fuse or failed relay, corroded or loose connectors.
• B1770 — OBD2 code B1770 flags a problem with the body electrical system (seat driver backward 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, body control module (BCM) fault.
• B1771 — Seat Driver Backward Circuit Short To Battery (B1771): 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, body control module (BCM) fault.
• B1772 — B1772 — Seat Driver Backward Circuit Short To Ground. 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.
• B1773 — B1773 — Mirror Driver Up Circuit Failure. 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, damaged wiring in door jambs or wet areas.
• B1774 — B1774 — Mirror Driver Up 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, damaged wiring in door jambs or wet areas.
• B1775 — OBD2 code B1775 flags a problem with the body electrical system (mirror driver up circuit short to battery). The car is usually drivable while you plan the repair. Common culprits: blown fuse or failed relay, damaged wiring in door jambs or wet areas, corroded or loose connectors.