What does code P1507 mean?

Q: What does code P1507 mean?

Idle Control System Malfunction Fail Safe. P1507 on a Subaru means the engine control module (ECM) has detected a fault in the idle control system and has entered a fail-safe mode, typically commanding a fixed idle speed to keep the engine running. The ECM monitors the idle control valve (ICV) circuit and idle speed feedback, and when the actual idle speed deviates from the target or the circuit response is out of range, it sets this code and illuminates the check engine light. This code is most common on older Subaru models with a cable-operated throttle and a separate idle air control valve.

DTC codes / Subaru codes / P1507

P1507 · SubaruIdle Control System Malfunction Fail Safe

P1507 on a Subaru means the engine control module (ECM) has detected a fault in the idle control system and has entered a fail-safe mode, typically commanding a fixed idle speed to keep the engine running. The ECM monitors the idle control valve (ICV) circuit and idle speed feedback, and when the actual idle speed deviates from the target or the circuit response is out of range, it sets this code and illuminates the check engine light. This code is most common on older Subaru models with a cable-operated throttle and a separate idle air control valve.

SystemPowertrain

Code typeSubaru specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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