KlaroP0101
MODERATEMass or Volume Air flow Circuit Range/Performance Problem
What this code means
Mass or Volume Air flow Circuit Range/Performance Problem. These codes concern the sensors that tell the control unit about the mixture: mass airflow, oxygen sensors, fuel trim corrections. They often point to an air leak or an ageing sensor rather than an outright failure.
How to read this code
- PPowertrain
- 0standardised code
- 1Fuel and air metering
- 01P0101
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 1, locates the fault: fuel and air metering.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.
Nearby codes
- P0100Mass or Volume Air flow Circuit Malfunction
- P0102Mass or Volume Air Flow Circuit low Input
- P0103Mass or Volume Air flow Circuit High Input
- P0104Mass or Volume Air flow Circuit Intermittent
- P0105Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
- P0106Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
- P0107Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108Manifold Absolute Pressure/Barometric Pressure Circuit High Input