All OBD-II Fault Codes
Browse all 102 diagnostic trouble codes organized by vehicle system. Click any code for detailed causes, diagnostics, and repair costs.
Engine Codes (86)
Intake Camshaft Position Actuator Circuit (Bank 1)
Intake Camshaft Position Timing Over-Advanced (Bank 1)
Intake Camshaft Position Timing Over-Retarded (Bank 1)
Exhaust Camshaft Position Actuator Circuit (Bank 1)
Exhaust Camshaft Position Timing Over-Advanced (Bank 1)
Crankshaft/Camshaft Position Correlation (Bank 1 Intake)
Crankshaft/Camshaft Position Correlation (Bank 1 Exhaust)
Mass Air Flow Circuit Malfunction
Mass Air Flow Sensor Circuit Range/Performance
Mass Air Flow Circuit Low Input
Mass Air Flow Circuit High Input
Manifold Absolute Pressure Sensor Circuit Range/Performance
Manifold Absolute Pressure Sensor Circuit Low Input
Manifold Absolute Pressure Sensor Circuit High Input
Intake Air Temperature Sensor 1 Circuit
Intake Air Temperature Sensor 1 Circuit Range/Performance
Intake Air Temperature Sensor 1 Circuit Low Input
Intake Air Temperature Sensor 1 Circuit High Input
Engine Coolant Temperature Sensor 1 Circuit
Engine Coolant Temperature Sensor 1 Circuit Range/Performance
Engine Coolant Temperature Sensor 1 Circuit Low Input
Engine Coolant Temperature Sensor 1 Circuit High Input
Throttle/Pedal Position Sensor A Circuit Malfunction
Throttle/Pedal Position Sensor A Circuit Range/Performance
Throttle/Pedal Position Sensor A Circuit Low Input
Throttle/Pedal Position Sensor A Circuit High Input
Coolant Temperature Below Thermostat Regulating Temperature
O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)
O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)
O2 Sensor Circuit Slow Response (Bank 1, Sensor 1)
O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)
O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)
O2 Sensor Circuit No Activity (Bank 1, Sensor 2)
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
O2 Sensor Circuit Malfunction (Bank 1, Sensor 3)
O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
O2 Sensor Circuit Malfunction (Bank 2, Sensor 2)
Fuel Trim Malfunction (Bank 1)
System Too Lean (Bank 1)
System Too Rich (Bank 1)
System Too Lean (Bank 2)
System Too Rich (Bank 2)
Fuel Rail Pressure Sensor Circuit Malfunction
Fuel Rail Pressure Sensor Circuit Range/Performance
Fuel Rail Pressure Sensor Circuit Low Input
Injector Circuit Malfunction
Injector Circuit Malfunction - Cylinder 1
Injector Circuit Malfunction - Cylinder 2
Injector Circuit Malfunction - Cylinder 3
Injector Circuit Malfunction - Cylinder 4
Injector Circuit Malfunction - Cylinder 5
Random/Multiple Cylinder Misfire Detected
Cylinder 1 Misfire Detected
Cylinder 2 Misfire Detected
Cylinder 3 Misfire Detected
Cylinder 4 Misfire Detected
Cylinder 5 Misfire Detected
Cylinder 6 Misfire Detected
Cylinder 7 Misfire Detected
Cylinder 8 Misfire Detected
Knock Sensor 1 Circuit Malfunction (Bank 1)
Crankshaft Position Sensor Circuit Malfunction
Camshaft Position Sensor Circuit Malfunction (Bank 1)
Ignition Coil B Primary/Secondary Circuit Malfunction
Catalyst System Efficiency Below Threshold (Bank 1)
Catalyst System Efficiency Below Threshold (Bank 2)
Vehicle Speed Sensor Malfunction
Idle Control System Malfunction
Idle Control System RPM High
System Voltage Low
OBD-II Monitor Testing Incomplete (Ford specific) / OBDII Drive Cycle Not Complete
Post Catalyst Fuel Trim System Too Lean (Bank 1)
Post Catalyst Fuel Trim System Too Rich (Bank 1)
Throttle Actuator Control Motor Circuit Range/Performance
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
System Too Lean at Idle (Bank 1)
O2 Sensor Signal Stuck Lean (Bank 1, Sensor 1)
O2 Sensor Signal Stuck Rich (Bank 1, Sensor 1)
O2 Sensor Signal Stuck Lean (Bank 1, Sensor 2)
O2 Sensor Signal Stuck Rich (Bank 1, Sensor 2)
Transmission Codes (4)
Emissions Codes (3)
EVAP System Codes (8)
Evaporative Emission Control System Malfunction
Evaporative Emission Control System Leak Detected (Small Leak)
Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Evaporative Emission Control System Vent Control Circuit Malfunction
Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
Evaporative Emission Control System Leak Detected (Large Leak)
Evaporative Emission Control System Leak Detected (Very Small Leak)
Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)