What does code P1579 mean?

Q: What does code P1579 mean?

ETC In Power Limiting Mode. P1579 on Ford vehicles indicates that the Electronic Throttle Control (ETC) system has entered a power-limiting mode, often called limp mode, because the Powertrain Control Module (PCM) detected a fault that prevents safe full-range throttle operation. The PCM has commanded reduced engine power to protect the driver and the engine until the underlying issue is resolved.

DTC codes / Ford codes / P1579

P1579 · FordETC In Power Limiting Mode

P1579 on Ford vehicles indicates that the Electronic Throttle Control (ETC) system has entered a power-limiting mode, often called limp mode, because the Powertrain Control Module (PCM) detected a fault that prevents safe full-range throttle operation. The PCM has commanded reduced engine power to protect the driver and the engine until the underlying issue is resolved.

SystemPowertrain

Code typeFord specific

SeverityHigh

Fix difficultyProfessional

AreaVehicle speed, idle control and auxiliary inputs

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