P0133
O2 Sensor Circuit Slow Response Bank 1 Sensor 1
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
Free on OBD DashX
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What P0133 means
- The fault code P0133 indicates that there is a problem with the oxygen sensor circuit for bank 1, sensor 1. This may cause the engine to run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Poor fuel economy
- Rough idle or stalling
- Reduced engine power or acceleration
Possible causes
- Failed oxygen sensor
- Faulty wiring or connections in the circuit
- Loose or corroded 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 oxygen sensor
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0133 on OBD DashX
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