Drive with caution — fix soon.
This code means the voltage in the bank 2 knock sensor circuit is reading higher than normal, which usually points to a wiring short to voltage, a connector problem, or a faulty sensor. With an untrustworthy signal, the computer falls back on a more conservative ignition timing to avoid engine damage. The typical fix is inspecting and repairing the wiring and connector and replacing the knock sensor if it has failed.
$150 – $400
Varies by vehicle and root cause.
Usually yes, for short trips. The engine may run slightly more conservatively, but it's safe to drive to a shop. Avoid hard acceleration and get it diagnosed before too long.
Most repairs cost between $150 and $400. A simple wiring or connector repair is cheaper, while replacing a sensor located under the intake manifold raises the labor cost.
It's moderate. The car won't break down right away, but the engine can't fine-tune timing without a reliable knock sensor, which can slowly affect performance and economy. It's best to fix it rather than wait.
High input means the circuit voltage is reading above the expected range, often from a wire shorted to a power source or a bad connector. A technician will check the wiring and sensor to find the cause.