P085C

Gear Shift Control Module B Communication Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Gear shifting problems
Transmission of the gearbox into emergency mode
Check Engine Light Illuminates
Reduced vehicle dynamics
Possible jerking when changing gears

Causes

Short circuit in module communication circuit
Shift control module B malfunction
Module power problems
Wiring harness damage
Corrosion of contacts or connectors

How to Fix

Check the integrity of the module communication circuit
Check the power supply and ground of the module
Inspect connectors and contacts for damage
Test Shift Control Module B
If necessary, replace the module or repair the wiring

Related codes

P085D P0868 P0870