Severity: Fix within days. Drive with caution and watch for new symptoms.
The computer is getting no usable signal from the sensor that listens for engine knock (uncontrolled detonation) on bank 1, so it cannot protect the engine by retarding the spark timing.
Check the wiring and connector, then replace the knock sensor if it gives no signal.
Without a working knock sensor the engine cannot protect itself from detonation. Avoid hard acceleration and low-octane fuel.
You can drive short distances carefully; watch for worsening symptoms. Without a working knock sensor the engine cannot protect itself from detonation. Avoid hard acceleration and low-octane fuel.
The most common causes are: Failed knock sensor; Damaged wiring or connector; Corroded terminals; Loose sensor. A scan tool and a visual check of the parts above is where a technician starts.
Check the wiring and connector, then replace the knock sensor if it gives no signal.
