P0927 Fault Code

Gear Shift Reverse Actuator Circuit High

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

The P0927 fault code indicates a high voltage condition within the gear shift reverse actuator circuit. This circuit is responsible for managing the engagement and disengagement of the reverse gear in the transmission system. A fault in this circuit can lead to improper shifting or difficulties in entering reverse gear, impacting the vehicle's drivability.

What are the symptoms of the P0927 code?

Drivers may experience several symptoms, such as:

• Inability to shift into reverse gear.
• Delayed engagement or harsh shifting when trying to reverse.
• Warning lights illuminated on the dashboard, particularly related to the transmission or transmission control warnings.
• Possible unusual noises coming from the transmission area when attempting to shift into reverse.

What causes the P0927 code?

Common causes of this fault code include:

• A short circuit in the wiring harness leading to the actuator.
• Corrosion or damage to connectors or terminals.
• A malfunctioning reverse actuator itself.
• Issues with the transmission control module (TCM) that affect the actuator's operation.
• Poor grounding or electrical connections within the circuit.

How to fix P0927?

To resolve the P0927 fault code, the following steps should be taken:

• Inspect and test the wiring and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
• Check the reverse actuator for proper operation and replace if found faulty.
• Verify that the TCM is functioning correctly and reprogram or replace it if needed.
• Clear the fault codes after repairs and conduct a road test to ensure that the issue has been resolved.