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P1135 Toyota

P1135 Toyota - Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 1 Sensor 1

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P1135 Toyota Comments |  Add Comment
Possible causes
- Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open or shorted
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
Help with Possible causes What does this mean?
When is the code detected?
The P1135 is set when the Engine Control Module (ECM) detects a heated oxygen sensor heater circuit malfunction
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1135 Toyota Description

Air-Fuel Ratio (A/F)sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. The faster the air-fuel ratio sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the air-fuel ratio sensor. The ECM controls the air-fuel ratio sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

OBDII Code P1135 Toyota - Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 1 Sensor 1
TOYOTA Technical Service Bulletins for P1135 code
2002 TOYOTA CAMRY Engine And Engine Cooling:engine Details
2002 TOYOTA CAMRY Engine And Engine Cooling:engine Details
2002 TOYOTA CAMRY Engine And Engine Cooling:engine Details
2002 TOYOTA CAMRY Engine And Engine Cooling:engine Details
2001 TOYOTA HIGHLANDER Unknown Or Other Details
2001 TOYOTA HIGHLANDER Unknown Or Other Details
2001 TOYOTA HIGHLANDER Unknown Or Other Details
1999 TOYOTA CAMRY SOLARA Engine And Engine Cooling:engine:gasoline Details
Help with Technical Service Bulletins What does this mean?
P1135 Toyota Information for specific Toyota models
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