KlaroP0104
MODERATEMass or Volume Air flow Circuit Intermittent
What this code means
Mass or Volume Air flow Circuit Intermittent. 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
- 04P0104
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
- P0101Mass or Volume Air flow Circuit Range/Performance Problem
- P0102Mass or Volume Air Flow Circuit low Input
- P0103Mass or Volume Air flow Circuit High Input
- 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