OBD2 code lookup

Enter the code your scanner returned to see what it means, how serious it is, and which parts most often fix it.

P0011

Camshaft Position A – Timing Over-Advanced (Bank 1)

Variable valve timing · Moderate severity

P0030

HO2S Heater Control Circuit (Bank 1, Sensor 1)

Emissions / oxygen sensor · Low severity

P0101

Mass Air Flow Circuit Range/Performance

Air intake · Moderate severity

P0113

Intake Air Temperature Sensor Circuit High

Air intake · Low severity

P0118

Engine Coolant Temperature Sensor Circuit High

Cooling · Moderate severity

P0131

O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)

Emissions / oxygen sensor · Moderate severity

P0138

O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)

Emissions / oxygen sensor · Low severity

P0171

System Too Lean (Bank 1)

Fuel and air metering · Moderate severity

P0174

System Too Lean (Bank 2)

Fuel and air metering · Moderate severity

P0175

System Too Rich (Bank 2)

Fuel and air metering · Moderate severity

P0300

Random/Multiple Cylinder Misfire Detected

Ignition · High severity

P0304

Cylinder 4 Misfire Detected

Ignition · High severity

P0306

Cylinder 6 Misfire Detected

Ignition · High severity

P0340

Camshaft Position Sensor Circuit Malfunction

Engine timing · High severity

P0351

Ignition Coil A Primary/Secondary Circuit

Ignition · Moderate severity

P0353

Ignition Coil C Primary/Secondary Circuit

Ignition · Moderate severity

P0401

EGR Flow Insufficient Detected

Emissions / EGR · Moderate severity

P0402

EGR Flow Excessive Detected

Emissions / EGR · Moderate severity

P0410

Secondary Air Injection System Malfunction

Emissions · Low severity

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

Emissions · Moderate severity

P0441

EVAP System Incorrect Purge Flow

Emissions / EVAP · Low severity

P0443

EVAP Purge Control Valve Circuit

Emissions / EVAP · Low severity

P0446

EVAP Vent Control Circuit

Emissions / EVAP · Low severity

P0449

EVAP Vent Valve/Solenoid Circuit

Emissions / EVAP · Low severity

P0455

EVAP System Large Leak Detected

Emissions / EVAP · Low severity

P0705

Transmission Range Sensor Circuit

Transmission · High severity

P2135

Throttle/Pedal Position Sensor A/B Voltage Correlation

Throttle control · High severity

P2271

O2 Sensor Signal Stuck Rich (Bank 1, Sensor 2)

Emissions / oxygen sensor · Low severity