Engine Error
P0147
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
Severity
Low
Symptoms
Check engine light, longer time to reach closed-loop operation
Common Causes
- Internal failure of O2 sensor heater element
- Blown heater circuit fuse
- Corroded heater ground wire
- Damaged wiring
How to Fix
- 1 Replace Bank 1 Sensor 3 O2 sensor
- 2 Replace blown fuses
- 3 Clean ground eyelets
- 4 Repair wiring harness
Estimated Repair Cost
USD
$10
–
$300
Fuse: $10; O2 sensor: $150 - $300