What does code P0592 mean?

Q: What does code P0592 mean?

Cruise Control Multi-Function Input 'B' Circuit Low. P0592 indicates that the cruise control multi-function input 'B' circuit has been detected as low by the engine control module (ECM) or body control module (BCM). This typically means the switch or wiring for a specific cruise control function—such as resume, set, or cancel—is sending a lower-than-expected voltage signal, often due to a short to ground or a faulty switch.

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P0592

P0592Cruise Control Multi-Function Input 'B' Circuit Low

P0592 indicates that the cruise control multi-function input 'B' circuit has been detected as low by the engine control module (ECM) or body control module (BCM). This typically means the switch or wiring for a specific cruise control function—such as resume, set, or cancel—is sending a lower-than-expected voltage signal, often due to a short to ground or a faulty switch.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.