What does code P1593 mean?

Q: What does code P1593 mean?

DISA Control Circuit Electrical. P1593 on a BMW indicates that the engine control module (DME) has detected an electrical fault in the control circuit for the DISA (Dual Intake System Adjuster) valve, which varies intake runner length for better torque and power. The DME monitors the circuit for open, short, or out-of-range resistance and sets this code when the expected current or voltage is not present.

DTC codes / BMW codes / P1593

P1593 · BMWDISA Control Circuit Electrical

P1593 on a BMW indicates that the engine control module (DME) has detected an electrical fault in the control circuit for the DISA (Dual Intake System Adjuster) valve, which varies intake runner length for better torque and power. The DME monitors the circuit for open, short, or out-of-range resistance and sets this code when the expected current or voltage is not present.

SystemPowertrain

Code typeBMW specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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