Drive with caution — fix soon.
This code means the engine computer is losing the signal from the 'B' crankshaft position sensor at irregular moments, rather than a steady fault. It's commonly caused by a loose connector, a wire that breaks contact when warm or vibrating, or a sensor that is starting to fail. Fixes usually involve cleaning or repairing the connector and wiring, or replacing the sensor, and rarely require major engine work.
$120 – $400
Varies by vehicle and root cause.
Usually yes for short trips, but it's risky to rely on. Intermittent crank sensor faults can turn into a full stall or no-start without warning. Get it diagnosed soon so an occasional glitch doesn't strand you.
Expect roughly $120 to $400. Cleaning or repairing a connector is cheap, while replacing the crankshaft position sensor with labor sits at the upper end of that range.
It's moderate. The engine often runs normally most of the time, but the intermittent nature means it can fail at the worst moment. Fixing it promptly prevents an unexpected breakdown.
Because the fault is intermittent, it may not show up when the mechanic tests it. Technicians often wiggle-test the wiring and connector or monitor the live signal while the engine warms up to catch the dropout.