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DTC - Diagnostic Trouble Codes information

P0147

Powertrain Codes

P0147 - FORD - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 3

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

When Detected

During testing the oxygen sensor (HO2S) heaters are checked for open and short circuits and exessive current draw

Description

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