Browse questions from Carly users about specific error codes. Offer help or get insight on how to fix them, what their cost is, or what they mean.

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Please note that this feature will be offered gradually and is not yet available for all brands and fault codes.

With Carly you have access to other functions besides reading the OBD2 errors.

Here are some examples of the functions of Carly. Please note that the available functions always depend on your make and model. Please check if the function you want is available for your model.

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Catalyst System Efficiency Below Threshold (Bank 1)

Catalyst System Efficiency Below Threshold

Catalyst System Efficiency Below Threshold (Bank 2)

Turbocharger/Supercharger Underboost Condition

Crankshaft Position Sensor “A” Circuit

Transmission Control System (MIL Request)

O2 Sensor Heater Circuit (Bank 1 Sensor 1)

Mass or Volume Air Flow “A” Circuit Low

Mass or Volume Air Flow Sensor Circuit Low

Exhaust Gas Recirculation Flow Insufficient Detected

Mass or Volume Air Flow “A” Circuit Range/Performance

Mass or Volume Air Flow Sensor Circuit Range/Performance

Evaporative Emission System Incorrect Purge Flow

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance

MAP/Barometric Pressure Sensor Circuit Range/Performance

Random/Multiple Cylinder Misfire Detected

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 2a)

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance

Throttle/Pedal Position Sensor/Switch “A” Circuit Low

Throttle/Pedal Position Sensor/Switch Circuit Low

Engine Coolant Temperature Sensor 1 Circuit High

Engine Coolant Temperature Sensor Circuit High

Idle Air Control System RPM Higher Than Expected

Idle Control System RPM Higher Than Expected

Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor)

Torque Converter Clutch Circuit Performance/Stuck Off

Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation

Throttle/Pedal Position Sensor/Switch Voltage Correlation

Evaporative Emission System Leak Detected (large leak)

Exhaust Gas Recirculation Control Circuit

Intake Air Temperature Sensor 1 Circuit High

Intake Air Temperature Sensor Circuit High

Evaporative Emission System Leak Detected (very small leak)

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

Evaporative Emission System Leak Detected (small leak)

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