Diagnostic Aids
WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Check knock sensor for proper connection. A loose or over-torqued knock sensor can cause DTC to set. If this DTC is determined to be intermittent refer to INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.