OBD2 Trouble Codes
Browse 543 diagnostic trouble codes — each with symptoms, causes, cost estimates, and repair guidance.
Input/Turbine Speed Sensor "A" Circuit No Signal
Input/Turbine Speed Sensor "A" Circuit Intermittent
Torque Converter/Brake Switch "B" Circuit Low
Output Speed Sensor Circuit Malfunction
Output Speed Sensor Circuit Range/Performance
Output Speed Sensor Circuit No Signal
Engine Speed Input Circuit Malfunction
Incorrect Gear Ratio
Gear 1 Incorrect Ratio
Gear 2 Incorrect Ratio
Gear 3 Incorrect Ratio
Gear 4 Incorrect Ratio
Gear 5 Incorrect Ratio
Torque Converter Clutch Circuit Malfunction
Torque Converter Clutch Circuit Performance or Stuck Off
Torque Converter Clutch Circuit Stuck On
Torque Converter Clutch Circuit Electrical
Torque Converter Clutch Circuit Intermittent
Pressure Control Solenoid 'A' Electrical
Shift Solenoid A Malfunction
Shift Solenoid 'A' Performance or Stuck Off
Shift Solenoid 'A' Stuck On
Shift Solenoid 'A' Electrical
Shift Solenoid 'B' Malfunction
Shift Solenoid 'B' Performance or Stuck Off
Shift Solenoid 'B' Stuck On
Shift Solenoid 'B' Electrical
Shift Solenoid 'C' Malfunction
Shift Solenoid 'C' Performance or Stuck Off
Shift Solenoid 'D' Malfunction
Shift Solenoid 'E' Malfunction
Pressure Control Solenoid 'B' Malfunction
Pressure Control Solenoid B Stuck On
Shift Malfunction
Shift/Timing Solenoid 'A' Malfunction
Normal/Performance Switch Circuit Malfunction
Pressure Control Solenoid 'C' Malfunction
Transmission Fluid Pressure Sensor B
Transmission Fluid Pressure Sensor B Low
Transmission Fluid Pressure Low
Transmission Fluid Pressure Sensor/Switch 'C' Circuit Range/Performance
Transmission Component Slipping
Pressure Control Solenoid A Control Circuit Low
Replace Hybrid Battery Pack
HV Battery Pack State of Charge Low
OBD-II System Readiness Test Not Complete
FordIntake Manifold Runner Control System Malfunction (Low RPM)
HondaIntake Manifold Runner Control System Malfunction (High RPM)
HondaFuel Control Mixture Lean (Bank 1 Sensor 1)
BMWElectronic Throttle System (ETS) Malfunction
Hyundai/KiaThrottle Position Sensor Signal Invalid
Hyundai/KiaLong Term Fuel Trim Additive — Bank 1 System Too Lean
Volkswagen/AudiAir/Fuel Ratio Sensor Circuit Range/Performance Malfunction – Bank 1, Sensor 1
ToyotaLack of Upstream Heated Oxygen Sensor Switch — Sensor Indicates Lean (Bank 1)
FordHO2S Insufficient Switching Bank 1 Sensor 1
General MotorsAir/Fuel Sensor Heater Circuit Response – Bank 1, Sensor 1
ToyotaLong Term Fuel Trim Additive Fuel — Bank 1 System Too Lean
BMWClosed Loop Control Function Bank 1
NissanAir/Fuel Ratio Sensor Circuit Range/Performance Malfunction – Bank 2, Sensor 1
ToyotaLack of Upstream Heated Oxygen Sensor Switch — Sensor Indicates Lean (Bank 2)
Ford