P0853 Fault Code

Drive Switch Input Circuit

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

The P0853 fault code signifies an issue with the Drive Switch Input Circuit. This circuit is responsible for transmitting the status of the drive switch, which determines whether the vehicle is in drive or neutral. Proper functioning of this circuit is crucial for optimal vehicle operation.

• The system might detect an unusual voltage or signal from the switch.
• This can affect the performance of the transmission and other vehicle systems dependent on the drive status.

What are the symptoms of the P0853 code?

Symptoms you might experience with a P0853 code include:

• Difficulty engaging the transmission or shifting gears
• The transmission might go into failsafe mode
• Warning lights appearing on the dashboard, such as the check engine light
• Unusual noises coming from the transmission area due to incorrect gear selection

What causes the P0853 code?

Common causes of the P0853 code include:

• Faulty drive switch or neutral safety switch
• Damaged wiring or connectors in the drive switch circuit
• Corrosion in connections leading to poor electrical contact
• Malfunctioning Engine Control Module (ECM) that misreads inputs from the drive switch

How to fix P0853?

To resolve the P0853 fault code, consider the following steps:

1. Inspect the drive switch and its wiring for any signs of damage or corrosion.
2. Test the functionality of the drive switch using a multimeter.
3. Repair or replace any faulty switch or wiring.
4. Clear the fault code and perform a test drive to ensure the issue is resolved.
5. If problems persist, consider checking the Engine Control Module (ECM) for faults or reprogramming.