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Engine-Codes.com | All About OBDII Engine Codes

P1133 1999 Toyota Camry

P1133 1999 Toyota Camry - Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 1 Sensor 1

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P1133 1999 Toyota Camry Comments |  Add Comment
Possible causes
- Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1
- Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted
- Air/Fuel Ratio Sensor Bank 1 Sensor 1 circuit poor electrical conection
Help with Possible causes What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1133 1999 Toyota Camry Description

The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Based on the output voltage, the Engine Control Module (ECM) determines if the air-fuel ratio is RICH or LEAN and adjusts the stoichiometric air-fuel ratio. The ECM also checks the fuel injection volume compensation value to check if the A/F sensor is deteriorating or not. A/F sensor response deterioration is determined by the ratio of the A/F sensor output voltage variation and fuel trim variation.

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