P1593 OBD Code Definition:
P1593 DISA Control Circuit Electrical
P1593 OBD Code Description:

Possible Symptoms

• Unknown

Commentary

This is one of those fault codes where the ECU knows something is amiss, but cannot pinpoint the cause.

Possible Causes

• MAF sensor out of tolerance.
• Leak in intake system.
• Throttle position sensors out of tolerance.

Possible Solutions

• Check MAF/replace MAF Sensor .
• Check intake systems for leaks and repair.
• Check Throttle position sensors.