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

• B1464 — OBD2 code B1464 flags a problem with the airbag / restraint system (SRS) (seat belt switch circuit short to battery). Short, gentle driving to a shop is usually possible. Common culprits: faulty impact or occupancy sensor, depleted backup battery or low system voltage, damaged wiring under seats or in the steering column.
• B1465 — B1465 — Wiper Brake/Run Relay Circuit Open. A fault in the ABS / stability control. Short, gentle driving to a shop is usually possible. Typical causes: failed wheel speed sensor, blown fuse or low voltage to the ABS module, faulty ABS module or pump motor.
• B1466 — OBD2 code B1466 flags a problem with the body electrical system (wiper hi/low speed not switching). 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.
• B1467 — Wiper Hi/Low Speed Circuit Motor Short To Battery (B1467): 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.
• B1468 — B1468 — Chime Input Request 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, corroded or loose connectors, damaged wiring in door jambs or wet areas.
• B1469 — B1469 — Chime Input Request Circuit Open. 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.
• B1470 — OBD2 code B1470 flags a problem with the body electrical system (lamp headlamp input circuit failure). 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.
• B1471 — B1471 — Lamp Headlamp Input 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, faulty switch, motor or actuator of the affected system.
• B1472 — B1472 — Lamp Headlamp Input Circuit Short To Ground. 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.
• B1473 — OBD2 code B1473 flags a problem with the body electrical system (wiper low speed circuit motor failure). The car is usually drivable while you plan the repair. Common culprits: faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas, blown fuse or failed relay.
• B1474 — Battery Saver Power Relay Circuit Short To Battery (B1474): 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, damaged wiring in door jambs or wet areas, body control module (BCM) fault.
• B1475 — OBD2 code B1475 flags a problem with the body electrical system (accessory delay relay contact 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.
• B1476 — B1476 — Wiper High Speed Circuit Motor 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.
• B1477 — OBD2 code B1477 flags a problem with the body electrical system (wiper hi/low circuit motor 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.
• B1478 — OBD2 code B1478 flags a problem with the body electrical system (power window one touch up/down activated simultaneously). 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.
• B1479 — Wiper Washer Fluid Level Sensor Circuit Failure (B1479): 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, blown fuse or failed relay.
• B1480 — Wiper Washer Fluid Level Sensor Circuit Open (B1480): 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.
• B1481 — Wiper Washer Fluid Level Sensor Circuit Short To Battery (B1481): 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, blown fuse or failed relay, corroded or loose connectors.
• B1482 — B1482 — Wiper Washer Fluid Level Sensor Circuit Short To Ground. 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.
• B1483 — OBD2 code B1483 flags a problem with the ABS / stability control (brake pedal input circuit failure). Short, gentle driving to a shop is usually possible. Common culprits: damaged sensor wiring or corroded connector, faulty ABS module or pump motor, damaged tone (reluctor) ring on the hub.
• B1484 — B1484 — Brake Pedal Input Open Circuit. A fault in the ABS / stability control. Short, gentle driving to a shop is usually possible. Typical causes: damaged tone (reluctor) ring on the hub, failed wheel speed sensor, faulty ABS module or pump motor.
• B1485 — Brake Pedal Input Circuit Battery Short (B1485): a body electrical fault affecting the ABS / stability control. Short, gentle driving to a shop is usually possible. Most often caused by damaged tone (reluctor) ring on the hub, faulty ABS module or pump motor, damaged sensor wiring or corroded connector.
• B1486 — Brake Pedal Input Circuit Ground Short (B1486): a body electrical fault affecting the ABS / stability control. Short, gentle driving to a shop is usually possible. Most often caused by damaged sensor wiring or corroded connector, blown fuse or low voltage to the ABS module, failed wheel speed sensor.
• B1487 — B1487 — Door Handle Right Front 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, faulty switch, motor or actuator of the affected system, damaged wiring in door jambs or wet areas.