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P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Possible causes
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
What does this mean? What does this mean?
Tech notes
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem
What does this mean? What does this mean?
When is the code detected?
Current amperage in the front heated oxygen sensor heater circuit is out of the normal range. (An improper voltage drop signal is sent to ECM through the front heated oxygen sensor heat
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible higher than usual fuel Consumption
P0135 Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen 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 heated oxygen sensor. The ECM controls the heated oxygen 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 P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com
P0135 Information for specific makes
P0135 ACURA O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 AUDI HO2S11 Sensor Heater Circuit  P0135 Image
P0135 BMW O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 BUICK HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 CADILLAC HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 CHEVROLET HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 FORD O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 GMC HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 HONDA O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 HUMMER HO2S Heater Performance Bank 1 Sensor 1
P0135 HYUNDAI O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 INFINITI HO2S11 Heater Circuit Fault  P0135 Image
P0135 ISUZU HO2S Heater Performance Sensor 1  P0135 Image
P0135 KIA HO2S11 Heater Circuit  P0135 Image
P0135 LEXUS Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 LINCOLN O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 MAZDA HO2S Heater Circuit Fault  P0135 Image
P0135 MERCEDES-BENZ O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 MERCURY O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 MITSUBISHI HO2S11 Heater Performance  P0135 Image
P0135 NISSAN HO2S11 Heater Circuit Fault  P0135 Image
P0135 PONTIAC HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 SATURN HO2S Heater Performance Bank 1 Sensor 1  P0135 Video
P0135 SCION Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 SUZUKI O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1  P0135 Image
P0135 TOYOTA Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 VOLKSWAGEN HO2S11 Sensor Heater Circuit  P0135 Image
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