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.

P0BBB — OBD2 code P0BBB flags a problem with the sensor and actuator circuits (hybrid battery voltage sense "Z" circuit high). The car is usually drivable while you plan the repair. Common culprits: faulty sensor or actuator of the affected circuit, blown fuse feeding the circuit, corroded, loose or damaged connector.
P0BBC — OBD2 code P0BBC flags a problem with the sensor and actuator circuits (hybrid battery voltage sense "Z" circuit intermittent/erratic). The car is usually drivable while you plan the repair. Common culprits: blown fuse feeding the circuit, poor ground connection, open or shorted wiring in the circuit.
P0BBD — OBD2 code P0BBD flags a problem with the sensor and actuator circuits (hybrid battery pack voltage variation exceeded limit). The car is usually drivable while you plan the repair. Common culprits: control module driver fault, open or shorted wiring in the circuit, poor ground connection.
P0BBE — Hybrid Battery Pack Voltage Variation (P0BBE): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by poor ground connection, control module driver fault, blown fuse feeding the circuit.
P0BBF — Hybrid Battery Pack Cooling Fan Supply Voltage Circuit/Open (P0BBF): a powertrain (engine/transmission) fault affecting the engine cooling and temperature control. Short, gentle driving to a shop is usually possible. Most often caused by low coolant level or air in the system, failed cooling fan or fan relay, thermostat stuck open or closed.
P0BC0 — Hybrid Battery Pack Cooling Fan Supply Voltage Circuit Low (P0BC0): a powertrain (engine/transmission) fault affecting the engine cooling and temperature control. Short, gentle driving to a shop is usually possible. Most often caused by wiring faults in the sensor circuit, faulty coolant temperature sensor, thermostat stuck open or closed.
P0BC1 — P0BC1 — Hybrid Battery Pack Cooling Fan Supply Voltage Circuit High. A fault in the engine cooling and temperature control. Short, gentle driving to a shop is usually possible. Typical causes: low coolant level or air in the system, wiring faults in the sensor circuit, water pump or radiator issues.
P0BC2 — OBD2 code P0BC2 flags a problem with the sensor and actuator circuits (hybrid battery temperature sensor "E" circuit). The car is usually drivable while you plan the repair. Common culprits: poor ground connection, open or shorted wiring in the circuit, blown fuse feeding the circuit.
P0BC3 — OBD2 code P0BC3 flags a problem with the sensor and actuator circuits (hybrid battery temperature sensor "E" range/performance). The car is usually drivable while you plan the repair. Common culprits: control module driver fault, poor ground connection, open or shorted wiring in the circuit.
P0BC4 — P0BC4 — Hybrid Battery Temperature Sensor "E" Circuit Low. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: poor ground connection, corroded, loose or damaged connector, open or shorted wiring in the circuit.
P0BC5 — P0BC5 — Hybrid Battery Temperature Sensor "E" Circuit High. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: control module driver fault, faulty sensor or actuator of the affected circuit, corroded, loose or damaged connector.
P0BC6 — Hybrid Battery Temperature Sensor "E" Circuit Intermittent/Erratic (P0BC6): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by corroded, loose or damaged connector, poor ground connection, faulty sensor or actuator of the affected circuit.
P0BC7 — OBD2 code P0BC7 flags a problem with the engine cooling and temperature control (hybrid battery pack cooling fan sense 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.
P0BC8 — OBD2 code P0BC8 flags a problem with the engine cooling and temperature control (hybrid battery pack cooling fan sense range/performance). Short, gentle driving to a shop is usually possible. Common culprits: wiring faults in the sensor circuit, faulty coolant temperature sensor, water pump or radiator issues.
P0BC9 — Hybrid Battery Pack Cooling Fan Sense Circuit Low (P0BC9): a powertrain (engine/transmission) fault affecting the engine cooling and temperature control. Short, gentle driving to a shop is usually possible. Most often caused by wiring faults in the sensor circuit, low coolant level or air in the system, faulty coolant temperature sensor.
P0BCA — P0BCA — Hybrid Battery Pack Cooling Fan Sense Circuit High. A fault in the engine cooling and temperature control. Short, gentle driving to a shop is usually possible. Typical causes: thermostat stuck open or closed, wiring faults in the sensor circuit, failed cooling fan or fan relay.
P0BCB — OBD2 code P0BCB flags a problem with the engine cooling and temperature control (hybrid battery pack cooling fan sense circuit intermittent/erratic). Short, gentle driving to a shop is usually possible. Common culprits: low coolant level or air in the system, failed cooling fan or fan relay, thermostat stuck open or closed.
P0BCC — Generator Inverter Temperature Sensor Circuit (P0BCC): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by corroded, loose or damaged connector, blown fuse feeding the circuit, control module driver fault.
P0BCD — P0BCD — Generator Inverter Temperature Sensor Circuit Range/Performance. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: open or shorted wiring in the circuit, faulty sensor or actuator of the affected circuit, blown fuse feeding the circuit.
P0BCE — Generator Inverter Temperature Sensor Circuit Low (P0BCE): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by blown fuse feeding the circuit, faulty sensor or actuator of the affected circuit, corroded, loose or damaged connector.
P0BCF — P0BCF — Generator Inverter Temperature Sensor Circuit High. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: open or shorted wiring in the circuit, poor ground connection, blown fuse feeding the circuit.
P0BD0 — P0BD0 — Generator Inverter Temperature Sensor Circuit Intermittent/Erratic. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: control module driver fault, blown fuse feeding the circuit, poor ground connection.
P0BD1 — P0BD1 — Drive Motor Inverter Temperature Sensor "C" Circuit. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: control module driver fault, poor ground connection, faulty sensor or actuator of the affected circuit.
P0BD2 — OBD2 code P0BD2 flags a problem with the sensor and actuator circuits (drive motor inverter temperature sensor "C" circuit range/performance). The car is usually drivable while you plan the repair. Common culprits: faulty sensor or actuator of the affected circuit, corroded, loose or damaged connector, open or shorted wiring in the circuit.