Engine Error
P0131
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
Severity
Medium
Symptoms
Lean engine condition, poor acceleration, hesitating
Common Causes
- Faulty O2 sensor
- Excessive lean fuel condition
- Corroded O2 sensor connector
- Short to ground in signal wire
How to Fix
- 1 Replace O2 sensor
- 2 Check for fuel delivery issues
- 3 Clean O2 sensor connector
- 4 Inspect for vacuum leaks
Estimated Repair Cost
USD
$150
–
$350
O2 sensor: $100 - $250; Diagnosis: $100