P0144

02 Sensor Circuit High Voltage (Bank 1 Sensor 3)

DTC P0144, sometimes indicated as P014400 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing 02 sensor circuit high voltage (bank 1 sensor 3).

The most likely cause of this code is a problem with the upstream oxygen sensor. The sensor could be malfunctioning, or there could be a problem with the wiring or connector.
If the upstream oxygen sensor is malfunctioning, it will not be able to accurately measure the amount of oxygen in the exhaust. This can cause the engine to run too rich or too lean, which can lead to reduced fuel economy and emissions problems.
If there is a problem with the wiring or connector, it can cause the voltage signal from the sensor to be distorted. This can cause the engine to run too rich or too lean, as well.
If the code is not caused by a problem with the oxygen sensor, there could be a problem with the fuel system, the ignition system, or the engine itself.

  • P0144: 02 Sensor Circuit High Voltage (Bank 1 Sensor 3)
  • P0144: O2 Sensor Circuit High Voltage Bank 1 Sensor 3
  • P0144: O2 Sensor Circuit High Volts (Bank 1 Sensor 3)
  • P0144: O2 Sensor Circuit High Voltage
  • P0144: Heated oxygen sensor (HO2S) 3, bank 1 – high voltage
  • P0144: Oxygen sensor (O2S) 3, bank 1 – high voltage
  • P0144 00: Probe circuit voltage? 3 too high - short circuit to power supply plus
  • P0144 00: Heated oxygen sensor (HO2S) 3, bank 1 - high voltage
  • P0144 00: Oxygen sensor (O2S) 3, bank 1 - high voltage

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Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

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