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

• P1690 — P1690 — Metering Oil Pump Stepping Motor Circuit Malfunction. 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, blown fuse feeding the circuit.
• P1691 — P1691 — Metering Oil Pump Stepping Motor Circuit Malfunction. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: corroded, loose or damaged connector, open or shorted wiring in the circuit, faulty sensor or actuator of the affected circuit.
• P1692 — Metering Oil Pump Stepping Motor Circuit Malfunction (P1692): 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 faulty sensor or actuator of the affected circuit, poor ground connection, control module driver fault.
• P1694 — OBD2 code P1694 flags a problem with the automatic transmission control (oil pressure control solenoid circuit malfunction). Short, gentle driving to a shop is usually possible. Common culprits: valve body wear, low or degraded transmission fluid, failed shift or pressure control solenoid.
• P1695 — P1695 — ECM to Injector Pump CAN Link Fault. P1695 does not by itself confirm an immediate fuel-pump failure, but the lost CAN link may prevent injector pump commands from reaching the module.
• P1696 — P1696 — Jaguar ECM Cruise-Control CAN Network Fault. P1696 identifies a CAN communication fault involving the Jaguar ECM and cruise control module.
• P1697 — P1697 — Jaguar Distance-Control Input Circuit Fault. P1697 can disable or destabilize the Jaguar distance-control/adaptive-cruise function, so that feature should not be relied upon until the circuit is repaired.
• P1698 — P1698 — Cold-Start Fuel Pump Primary Circuit Fault. P1698 can interfere with the dedicated cold-start pump circuit and cause hard starting or stalling.
• P1699 — P1699 — Climate Control CAN Communication Failure. P1699 usually affects climate-control communication rather than propulsion, so driving may be possible.
• P1700 — OBD2 code P1700 flags a problem with the turbocharger / supercharger boost control (wastegate solenoid circuit malfunction). Short, gentle driving to a shop is usually possible. Common culprits: stuck wastegate or faulty boost control solenoid, faulty boost pressure sensor, clogged intake or exhaust (DPF/cat).
• P1701 — Turbo Pressure Control Solenoid Circuit Malfunction (P1701): a powertrain (engine/transmission) fault affecting the turbocharger / supercharger boost control. Short, gentle driving to a shop is usually possible. Most often caused by boost leak in intercooler piping or hoses, clogged intake or exhaust (DPF/cat), faulty boost pressure sensor.
• P1702 — P1702 — Turbo Control Solenoid Circuit Malfunction. A fault in the turbocharger / supercharger boost control. Short, gentle driving to a shop is usually possible. Typical causes: worn turbocharger, stuck wastegate or faulty boost control solenoid, boost leak in intercooler piping or hoses.
• P1703 — Turbo Charge Control Circuit Malfunction (P1703): a powertrain (engine/transmission) fault affecting the turbocharger / supercharger boost control. Short, gentle driving to a shop is usually possible. Most often caused by clogged intake or exhaust (DPF/cat), vacuum or actuator line damage, stuck wastegate or faulty boost control solenoid.
• P1705 — P1705 — Transmission Indeterminate Failure (Failed to Neutral). A fault in the automatic transmission control. Short, gentle driving to a shop is usually possible. Typical causes: valve body wear, low or degraded transmission fluid, internal mechanical wear (clutches, torque converter).
• P1706 — Reverse Engagement Error (P1706): 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 open or shorted wiring in the circuit, faulty sensor or actuator of the affected circuit, control module driver fault.
• P1707 — P1707 — TRS Circuit Intermittent Malfunction. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: poor ground connection, blown fuse feeding the circuit, open or shorted wiring in the circuit.
• P1708 — P1708 — Brake Switch Out Of Self Test Range. A fault in the ABS / stability control. Short, gentle driving to a shop is usually possible. Typical causes: failed wheel speed sensor, damaged tone (reluctor) ring on the hub, damaged sensor wiring or corroded connector.
• P1709 — OBD2 code P1709 flags a problem with the sensor and actuator circuits (digital TRS failed to transition states in KOEO / KOER). The car is usually drivable while you plan the repair. Common culprits: blown fuse feeding the circuit, poor ground connection, corroded, loose or damaged connector.
• P1710 — P1710 — Transmission Fluid Temperature Sensor In-Range Fault. P1710 may not produce obvious symptoms because the displayed fluid temperature remains in range.
• P1711 — OBD2 code P1711 flags a problem with the sensor and actuator circuits (not in p or n during KOEO / KOER). The car is usually drivable while you plan the repair. Common culprits: poor ground connection, blown fuse feeding the circuit, control module driver fault.
• P1712 — P1712 — High Vehicle Speed Observed in Park. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: blown fuse feeding the circuit, open or shorted wiring in the circuit, control module driver fault.
• P1713 — Transfer Case Neutral Indicator Hard Fault Present (P1713): 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 faulty sensor or actuator of the affected circuit, poor ground connection, blown fuse feeding the circuit.
• P1714 — P1714 — Clutch Switch Circuit Malfunction. 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, corroded, loose or damaged connector, blown fuse feeding the circuit.
• P1715 — OBD2 code P1715 flags a problem with the sensor and actuator circuits (PNP switch out of self test range). The car is usually drivable while you plan the repair. Common culprits: control module driver fault, faulty sensor or actuator of the affected circuit, poor ground connection.