P085D

Gear Shift Control Module A Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
The car may go into emergency gearbox mode
Gear shifting problems
Reduced vehicle dynamics
Possible jerks when switching

Causes

Problems with wiring to the control module
Shift control module malfunction
Poor contact in connectors
Mechanical problems in the gearbox
Module power problems

How to Fix

Check the condition of the electrical wiring and connectors
Check the module supply voltage
Scan the module for additional errors
If necessary, replace the control module
Test the gearbox after repair

Related codes

P085E P0868 P0870