What causes P1589 on a Ford?

Binding throttle plate Weak TCU motor Carbon-blocked bore Low system voltage Failing TCU

How do I fix P1589 on a Ford?

Clean the throttle bore thoroughly Check system voltage Test plate movement by hand Command angles with a scanner Replace the TCU assembly if control fails

P1589 Throttle Control Unit Unable to Control Desired Throttle Angle

Q: What does P1589 mean on a Ford?

P1589 — Throttle Control Unit Unable to Control Desired Throttle Angle. Applies to Contour, Mystique, early electronic-throttle Fords.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Contour, Mystique, early electronic-throttle Fords

What does P1589 mean on a Ford?

P1589 — Throttle Control Unit Unable to Control Desired Throttle Angle. This Ford-enhanced code applies to Contour, Mystique, early electronic-throttle Fords.

Common causes of P1589

Binding throttle plate
Weak TCU motor
Carbon-blocked bore
Low system voltage
Failing TCU

How to fix P1589

Clean the throttle bore thoroughly
Check system voltage
Test plate movement by hand
Command angles with a scanner
Replace the TCU assembly if control fails