For Shop Owners

P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3 What does this mean?

Possible causes

  • Faulty Front Heated Oxygen Sensor Bank 1
  • Front Heated Oxygen Sensor Bank 1 harness is open or shorted
  • Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
  • Inappropriate fuel pressure
  • Faulty fuel injectors
  • Intake air leaks may be faulty
  • Exhaust gas leaks
What does this mean?

Tech notes

Replacing the Front Heated Oxygen Sensor Bank 1 usually takes care of the problem
What does this mean?

When is the code detected?

The response of the voltage signal from the sensor takes more than the specified time.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • High Fuel Consumption
  • Excessive Smoke from Exhaust

P0133 Description

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.
OBDII Code P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 - itimaster.ru

P0133 Information for specific makes

P0133 ACURA O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 AUDI HO2S11 Sensor Circuit Slow Response
P0133 BUICK HO2S Slow Response Bank 1 Sensor 1
P0133 CADILLAC HO2S Slow Response Bank 1 Sensor 1
P0133 CHEVROLET HO2S Slow Response Bank 1 Sensor 1
P0133 CHRYSLER O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 DODGE O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 FORD O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 GMC HO2S Slow Response Bank 1 Sensor 1
P0133 HONDA O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 HYUNDAI O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 INFINITI-2 Air Fuel Ratio Circuit Slow Response Bank 1 Sensor 1
P0133 INFINITI O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 ISUZU HO2S Slow Response Sensor 1
P0133 JAGUAR O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 JEEP O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 KIA HO2S11 Circuit Slow Response
P0133 LEXUS HO2S11 Circuit Slow Response
P0133 LINCOLN O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 MAZDA HO2S Circuit Slow Response
P0133 MERCEDES-BENZ O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 MERCURY O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 MITSUBISHI Cylinder 1-4 Heated Oxygen Front Sensor Circuit Slow Response
P0133 NISSAN-2 Air Fuel Ratio Circuit Slow Response Bank 1 Sensor 1
P0133 NISSAN O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 PONTIAC HO2S Slow Response Bank 1 Sensor 1
P0133 SATURN HO2S Slow Response Bank 1 Sensor 1
P0133 SCION Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 SUBARU HO2S11 Circuit Slow Response
P0133 SUZUKI O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 TOYOTA HO2S11 Circuit Slow Response
P0133 VOLKSWAGEN HO2S11 Sensor Circuit Slow Response

Need more help?

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P0133 Comments

Help us improve itimaster.ru. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0133 code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 2
1=Low 2=Medium 3=High
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard

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