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Diagnose/P0331
P0331Medium SeverityEngine

Knock Sensor 2 Circuit Range/Performance (Bank 2)

What This Means

The knock sensor 2 on bank 2 readings are outside the expected operating range. This sensor monitors detonation on the bank 2 side of V-configuration engines.

Common Symptoms

  • Check engine light on
  • Reduced performance on bank 2
  • Timing retarded
  • Possible knock

Common Causes

  • Failed knock sensor 2
  • Wiring damage on bank 2 side
  • Loose sensor mounting
  • Corroded connector
  • Engine noise interference

Estimated Repair Cost

$150 – $500
Parts and labor (varies by vehicle and location)
Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.