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DTC - Diagnostic Trouble Codes information

P0144

Powertrain Codes

P0144 - INFINITI - Heated Oxygen Sensor 3 Heater Control Circuit Low

Symptoms

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

Possible Causes

- Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted - Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection - Faulty Heated Oxygen Sensor Bank 1 Sensor 3

Description

The powertrain control module uses the oxygen sensor to calculate the air/fuel ratio in the exhaust.