P0146
O2 Sensor Circuit No Activity Detected Bank 1 Sensor 3
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
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What P0146 means
- The fault code P0146 indicates that the O2 sensor for bank 1 sensor 3 is not producing any voltage output, which suggests a problem with the sensor or the circuitry that controls it. This may cause the engine to run poorly or produce excess emissions.
Possible symptoms
- Illuminated check engine light
- Reduced engine power or acceleration
- Rough idle or stalling
- Poor fuel economy
- Increased emissions
Possible causes
- Failed O2 sensor
- Wiring or connections in the circuit are damaged or corroded
- Failed engine control module (ECM)
Related parts
- Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy
Possible solutions
- Replace the faulty O2 sensor
- Check and repair any damaged or corroded wiring or connections
- Replace the engine control module (ECM) if needed
Free on OBD DashX
P0146 on OBD DashX
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