Engine Error
P0054
HO2S Heater Resistance (Bank 1 Sensor 2)
Severity
Low
Symptoms
Check engine light on, minor decrease in fuel mileage
Common Causes
- Internal O2 sensor heater failure
- Corroded O2 sensor connector
- Damaged exhaust wiring harness
- Wrong O2 sensor installed
How to Fix
- 1 Replace downstream O2 sensor
- 2 Clean connector pins with electronic cleaner
- 3 Repair damaged wiring harness
- 4 Verify OEM part number match
Estimated Repair Cost
USD
$80
–
$300
O2 sensor and labor: $150 - $300