Drivable short-term, but fix now to avoid damage.
This code means the computer is getting an RPM signal from the ignition or distributor sensor, but the value is outside the expected range or doesn't make sense. It usually points to a failing crankshaft or distributor speed sensor, damaged wiring, or a bad connector. The fix often involves cleaning or replacing the sensor and repairing the affected wiring.
$150 – $450
Varies by vehicle and root cause.
It's risky. The RPM signal is unreliable, so the engine may stall or refuse to start at any time. Drive only if necessary and get it checked as soon as possible to avoid being stranded.
Most repairs land between $150 and $450. A simple sensor or connector fix is on the lower end, while replacing a distributor or repairing wiring harnesses can push it higher.
Yes, it can be. Because it affects the engine speed signal, it can lead to stalling and no-starts. It's not usually catastrophic for the engine, but it should be addressed promptly.
P0322 means the RPM signal is present but out of the expected range, while P0323 means there's no signal at all. P0323 is often the more severe stage of the same circuit problem.