P0147

O2 Sensor Heater Circuit Bank 1 Sensor 3

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation
Check Engine Light Is On
Increased emissions of harmful substances

Causes

Open or short circuit in the sensor heating circuit
Malfunction of the oxygen sensor itself
Wiring Harness Problems
Heating circuit relay or fuse malfunction
Oxidation of contacts

How to Fix

Check the integrity of the fuses and relays of the heating circuit
Inspect the wiring harness for damage
Check the resistance of the sensor heating element
Check the voltage in the heating circuit
If necessary, replace the oxygen sensor

Related codes

P0135 P0141 P0161