P0142
O2 Sensor Circuit Malfunction Bank 1 Sensor 3
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
Free on OBD DashX
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What P0142 means
- The fault code P0142 indicates that there is a problem with the O2 sensor circuit for bank 1, sensor 3. This may lead to issues with fuel efficiency and emissions control.
Possible symptoms
- Poor fuel efficiency
- Increased emissions
- Illuminated check engine light
- Rough idle or stalling
- Loss of power or acceleration
Possible causes
- Failed O2 sensor
- Damaged or corroded wiring or connections in the circuit
- Loose or damaged electrical connections
- 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 O2 sensor
- Check and repair any damaged wiring or connections
- Tighten or replace any loose or damaged electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0142 on OBD DashX
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