KlaroP0130
MODERATEO2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
What this code means
The sensor measuring oxygen in the exhaust no longer responds correctly. Fuel consumption and emissions may rise.
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
- 30P0130
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
- P0131O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- P0132O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- P0133O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
- P0134O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- P0135O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0136O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
- P0137O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- P0138O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)