Knock Sensor B Circuit Low
The engine computer is not getting the normal signal from knock sensor B. This can be caused by a bad sensor, damaged wiring, or a problem in the engine control circuit. The engine may run poorly and may be at risk of knock damage if the issue is ignored.
You may be able to drive short distances, but the engine should be checked soon. If the engine is knocking, running rough, or losing power, avoid driving until repaired.
P0332 means the powertrain control module has detected a low-voltage or low-signal condition on the knock sensor B circuit. On most vehicles, this points to an electrical fault in the sensor circuit rather than an actual engine knock event. The PCM uses this input to adjust ignition timing, so a fault can reduce performance and fuel economy.
It means the engine computer is seeing a signal from knock sensor B that is lower than expected, or no valid signal at all.
Yes. The computer may reduce ignition timing to protect the engine, which can lower power and fuel economy.
Low-quality fuel can cause actual knock, but P0332 usually points to an electrical problem in the sensor circuit.
Sometimes yes, but on many engines it is difficult to access and requires intake or other components to be removed.