P0862 Fault Code

Gear Shift Module Communication Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0862 code indicates that there is an issue with the gear shift module communication circuit, specifically that the voltage level is higher than expected. This can disrupt normal communication between the gear shift module and the engine control unit (ECU), leading to transmission issues. Understanding the implications of this fault code is essential for proper diagnosis and repair.

What are the symptoms of the P0862 code?

Symptoms of the P0862 fault may include:

• Erratic shifting or failure to shift properly
• Transmission stuck in one gear
• Warning lights illuminated on the dashboard, such as the Check Engine Light
• Poor acceleration or performance issues

What causes the P0862 code?

Several factors can lead to the P0862 fault code, including:

• Faulty gear shift module
• Damaged or frayed wiring in the communication circuit
• Poor electrical connections
• Short circuit or ground fault in the circuit
• Malfunctioning transmission control unit (TCU)

How to fix P0862?

To resolve the P0862 code, the following steps are recommended:

1. Inspect the wiring and connectors for signs of damage, corrosion, or poor connections.
2. Test the gear shift module for proper functionality.
3. Check the voltage levels in the communication circuit to ensure they are within specifications.
4. Replace any faulty components, such as the gear shift module or wiring, as needed.
5. Clear the fault code and conduct a road test to ensure the issue is resolved.