B2591 code meaning, causes and symptoms

B2591 means detent signal missing during unlatch.

B2591 code meaning is one of the most common OBD-II searches when a warning light appears on the dashboard.

Drivers searching for B2591 usually want to know what the code means, whether the car is safe to drive and what part may need testing first.

Because B2591 can appear on multiple makes and models, it is important to combine the code meaning with live data, symptoms and any other stored faults.

A proper diagnosis for B2591 should normally include a scan tool check, freeze-frame review and inspection of the components related to detent signal missing during unlatch.

Severity: Medium

Driving advice: Whether you can keep driving depends on how the vehicle is behaving. If there is rough running, loss of power, overheating or stalling, diagnose it as soon as possible.

FAQs

What does B2591 mean?

B2591 means detent signal missing during unlatch.

What can cause B2591?

Causes can include failed components, wiring faults, leaks, pressure issues, bad readings or another upstream fault affecting the same system.

Is B2591 serious?

Severity depends on how the vehicle is behaving and what system is affected. Some codes are minor, while others can affect engine performance, emissions or drivability.