What does code P059D mean?

Q: What does code P059D mean?

Active Grille Air Shutter A Position Sensor Circuit Low. P059D means the powertrain control module (PCM) has detected a low-voltage signal from the position sensor circuit of active grille air shutter 'A', which is the sensor that reports how far the shutter vanes are open or closed. The circuit voltage has fallen below the calibrated minimum, so the PCM cannot trust the shutter position feedback and sets this code.

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P059D

P059DActive Grille Air Shutter A Position Sensor Circuit Low

P059D means the powertrain control module (PCM) has detected a low-voltage signal from the position sensor circuit of active grille air shutter 'A', which is the sensor that reports how far the shutter vanes are open or closed. The circuit voltage has fallen below the calibrated minimum, so the PCM cannot trust the shutter position feedback and sets this code.

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.