P085A

Gear Shift Control Module B Communication Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Gear shift delays
The gearbox goes into emergency mode
Check Engine light comes on
Unstable gearbox operation
Power Loss

Causes

Open or short circuit in the module communication circuit
Damaged connectors or corrosion
Shift control module B malfunction
Module power problems
Software error in the module

How to Fix

Check the integrity of the communication circuit
Inspect connectors for damage and corrosion
Check power supply and grounding of the module
Scan the module for errors
Replace shift control module B if necessary

Related codes

P085B P085C P085D