Drive with caution — fix soon.
This code means the engine computer detected a high voltage signal from crankshaft position sensor B. It's usually caused by an open circuit, a wiring fault, a failing sensor, or a loss of ground reference. It's a common circuit code and is typically repaired by fixing the wiring or replacing the sensor.
$150 – $500
Varies by vehicle and root cause.
Short trips are usually fine, but don't rely on it. A high or unstable crankshaft signal can cause stalling or a no-start, so it's smart to get it checked before the sensor or wiring fails completely.
Repairs generally cost $150 to $500. Fixing wiring or a connector can be cheaper, while replacing the sensor with labor sits in the middle to upper part of that range.
It's moderate. The engine may keep running for now, but an unreliable crankshaft signal can lead to sudden stalling, so it shouldn't be ignored for long.
High input often comes from an open circuit or a broken wire that lets the voltage float high, rather than the sensor itself. Corroded connectors and a lost ground are also common culprits worth checking first.