Knock Sensor 1 Range/Performance (Bank 1)

What This Means

The knock sensor on bank 1 is producing signals outside the expected range. The sensor may be functioning but providing unreliable knock detection data.

Common Symptoms

• Retarded timing
• Reduced performance
• Poor fuel economy
• Check engine light on

Common Causes

• Failing knock sensor
• Improper torque on sensor
• Engine noise issues
• Wiring resistance
• PCM calibration

Estimated Repair Cost