Engine Error
P0331
Knock Sensor 2 Circuit Range/Performance (Bank 2)
Severity
Medium
Symptoms
Engine feels sluggish, check engine light, poor acceleration
Common Causes
- Faulty knock sensor on Bank 2
- Corrosion in sensor plug
- Wrong torque applied to sensor during installation
- Engine mechanical rattle triggering sensor
How to Fix
- 1 Replace Bank 2 knock sensor
- 2 Clean connector pins
- 3 Torque sensor to exact factory specification
- 4 Fix mechanical rattles (e.g., loose heat shields)
Estimated Repair Cost
USD
$150
–
$500
Knock sensor and intake gaskets: 250 - 500