P0925 OBD-II Trouble Code: Gear Shift Reverse Actuator Circuit Range/Performance

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Cost of diagnosing the P0925 code

P0925 is a diagnostic trouble code (DTC) for "Gear Shift Reverse Actuator Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0925 code definition

The P0925 trouble code detects an issue with the gear shift reverse actuator circuit.

What the P0925 code means

The P0925 code is a generic OBD-II trouble code that notes a problem with the transmission’s gear shift reverse actuator circuit. The gear shift reverse actuator is responsible for shifting the transmission into the reverse gear. When the powertrain control module (PCM) or engine control module (ECM) detects an abnormal voltage reading from the gear shift reverse actuator circuit, then the P0925 trouble code will be detected.

What causes the P0925 code?

A few different issues can cause the P0925 trouble code to be triggered:

  • Defective gear shift reverse actuator
  • Mechanical issues within the transmission
  • Malfunctioning reverse gear guide rail or shift shaft
  • In rare cases, a defective PCM, ECM, or transmission control module
  • Damaged electrical components in the system, such as shorted wires or corroded connectors

What are the symptoms of the P0925 code?

The P0925 trouble code will likely be accompanied by the Check Engine Light illuminating on the gauge cluster. The vehicle will also likely have problems shifting into or out of the reverse gear, or may refuse to altogether. It is also common for fuel efficiency to be reduced.

How does a mechanic diagnose the P0925 code?

The P0925 code will be diagnosed with the help of a standard OBD-II trouble code scanner. A reputable technician can use the freeze frame data from the scanner to assess the P0925 code, and also to look for any additional trouble codes that are present. If numerous codes are present, they should be addressed in the order in which they appear. The mechanic will then reset the trouble codes, restart the vehicle, and check to see if the code has returned. If the P0925 code disappears, it was most likely triggered incorrectly, or represents an intermittent issue.

If the code does return, the mechanic should begin with a visual inspection of all electrical components in the system. Any damaged wires, connectors, fuses, or circuits will need to be replaced. Next, the mechanic will perform a thorough inspection on the gear shift reverse actuator, as well as the guide rail and shift shaft.

If the problem is still unresolved, a deeper inspection of the entire transmission system will be required.

Whenever a component is replaced during inspection and repairs, the mechanic should reset the trouble codes and restart the vehicle, to see if the code returns. By doing this, the mechanic is able to know as soon as the issue is resolved.

Common mistakes when diagnosing the P0925 code

The most common mistake to make when diagnosing the P0925 code comes from failing to adhere to the OBD-II trouble code diagnosis protocol. Mechanics should obey the protocol step by step at all times, to make sure that their inspection and repair is as effective and efficient as possible. Failure to do so may result in addressing codes in the wrong order, missing a relatively simple fix, or not clearing the codes.

How serious is the P0925 code?

A vehicle with the P0925 trouble code is still drivable, though the reverse gear may not be usable. If the car is driven with a detected P0925 code, severe damage to the transmission is risked. For both of these reasons, the code should be addressed as soon as it is detected.

What repairs can fix the P0925 code?

Some repairs for the P0925 code include:

Additional comments for consideration regarding the P0925 code

It is very rare for the PCM, ECM, or transmission control module to require replacement. However, if one of these control modules does need to be replaced, it will require reprogramming.

Need help with a P0925 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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