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

• B2330 — B2330 — Column Reach Feedback Potentiometer 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, corroded or loose connectors.
• B2331 — Column Reach Feedback Potentiometer Circuit Short to Ground (B2331): 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.
• B2332 — Column Tilt Feedback Potentiometer Circuit Failure (B2332): 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, body control module (BCM) fault.
• B2333 — B2333 — Column Tilt Feedback Potentiometer 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, corroded or loose connectors, faulty switch, motor or actuator of the affected system.
• B2334 — Column Tilt Feedback Potentiometer Circuit Short to Battery (B2334): 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, damaged wiring in door jambs or wet areas.
• B2335 — Column Tilt Feedback Potentiometer Circuit Short to Ground (B2335): 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, faulty switch, motor or actuator of the affected system.
• B2336 — OBD2 code B2336 flags a problem with the body electrical system (mirror switch assembly circuit failure). The car is usually drivable while you plan the repair. Common culprits: damaged wiring in door jambs or wet areas, faulty switch, motor or actuator of the affected system, body control module (BCM) fault.
• B2337 — Mirror Switch Assembly Circuit Open (B2337): 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, body control module (BCM) fault.
• B2338 — Mirror Switch Assembly Circuit Short to Battery (B2338): 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, blown fuse or failed relay.
• B2339 — B2339 — Mirror Switch Assembly 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, corroded or loose connectors, damaged wiring in door jambs or wet areas.
• B2340 — B2340 — Column Reach Motor Stalled. 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, blown fuse or failed relay, corroded or loose connectors.
• B2341 — B2341 — Column Tilt Motor Stalled. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: blown fuse or failed relay, damaged wiring in door jambs or wet areas, corroded or loose connectors.
• B2342 — B2342 — Seat Switch Reference Voltage Positive Common Open Circuit. 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, body control module (BCM) fault.
• B2343 — OBD2 code B2343 flags a problem with the body electrical system (seat switch reference voltage positive common supply low voltage). 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.
• B2344 — B2344 — Seat Switch Reference Voltage Positive Common Supply Voltage Fault. A fault in the body electrical system. The car is usually drivable while you plan the repair. Typical causes: corroded or loose connectors, body control module (BCM) fault, faulty switch, motor or actuator of the affected system.
• B2345 — B2345 — Seat Switch Reference Voltage Negative Common Open Circuit. 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, corroded or loose connectors.
• B2346 — B2346 — Mirror Switch Reference Voltage Positive Common Open Circuit. 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.
• B2347 — B2347 — Mirror Switch Reference Voltage Positive Common Supply Low Voltage. 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.
• B2348 — OBD2 code B2348 flags a problem with the body electrical system (mirror switch reference voltage positive common supply voltage fault). 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, body control module (BCM) fault.
• B2349 — OBD2 code B2349 flags a problem with the body electrical system (mirror switch reference voltage negative common open circuit). 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, body control module (BCM) fault.
• B2350 — OBD2 code B2350 flags a problem with the body electrical system (steering column switch circuit short to battery). 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, corroded or loose connectors.
• B2351 — B2351 — Steering Column Switch 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, body control module (BCM) fault, corroded or loose connectors.
• B2352 — Driver Memory Power Switch Indicator Circuit Short to Battery (B2352): 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.
• B2353 — B2353 — Driver Mirror Power Driver Circuit Short 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, corroded or loose connectors, body control module (BCM) fault.