What is OBD-II Code P085E – Gear Shift Control Module B Performance



What is OBD-II Code P085E – Gear Shift Control Module B Performance

If you’re driving a newer vehicle, it likely has an OBD-II (On-Board Diagnostics II) system, which is an electronic system that continuously monitors and diagnoses the vehicle’s performance. One of the key features of the OBD-II system is its ability to detect issues and record them in the form of diagnostic trouble codes (DTCs). One such code is OBD-II Code P085E, which is related to the vehicle’s Gear Shift Control Module B Performance.

In this article, we’ll provide an explanation of what OBD-II Code P085E means, how to diagnose the issue, and how to repair it.

What is OBD-II Code P085E?

OBD-II Code P085E is defined as a “Gear Shift Control Module B Performance” code. This code is set when the powertrain control module (PCM) detects that the Gear Shift Control Module B is not operating within its expected performance range.

The Gear Shift Control Module B is responsible for controlling the shift lock solenoid, which allows the gear shift lever to be moved out of the Park position when the brake pedal is depressed. If the Gear Shift Control Module B is not functioning properly, it can result in the gear shift lever being stuck in Park or not being able to shift into the correct gear.

Symptoms of OBD-II Code P085E

There are several symptoms that may indicate an issue with the Gear Shift Control Module B that may cause OBD-II Code P085E to be set. These symptoms may include:

– The gear shift lever being stuck in Park or not shifting out of Park.
– The gear shift lever not shifting into the correct gear.
– The transmission not engaging properly.

Causes of OBD-II Code P085E

There are several potential causes of OBD-II Code P085E, including:

– A faulty Gear Shift Control Module B.
– A faulty shift lock solenoid.
– Wiring or electrical issues.
– A malfunctioning brake pedal switch.

Diagnosing OBD-II Code P085E

Diagnosing the cause of OBD-II Code P085E requires a diagnostic scan tool and some basic knowledge of the vehicle’s electrical system. Here are the steps to diagnose the issue:

Step 1: Use a diagnostic scan tool to retrieve the DTCs from the PCM.

Step 2: Inspect the wiring and connections to the Gear Shift Control Module B, shift lock solenoid, and brake pedal switch for any visible signs of damage or wear.

Step 3: Test the Gear Shift Control Module B for proper operation using a multimeter or other diagnostic tool. If the Module is found to be defective, it will need to be replaced.

Step 4: Test the shift lock solenoid for proper operation using a multimeter or other diagnostic tool. If the solenoid is found to be defective, it will need to be replaced.

Step 5: Test the brake pedal switch for proper operation using a multimeter or other diagnostic tool. If the switch is found to be defective, it will need to be replaced.

Repairing OBD-II Code P085E

After diagnosing the issue, repairing OBD-II Code P085E may be a relatively simple process. Depending on the root cause of the issue, one or more of the following repairs may be required:

– Replacing the Gear Shift Control Module B
– Replacing the shift lock solenoid
– Repairing or replacing wiring or electrical connections
– Replacing the brake pedal switch

Conclusion

OBD-II Code P085E is a Gear Shift Control Module B performance code that can indicate a range of issues related to the vehicle’s transmission. By following the diagnostic steps outlined above, it is possible to identify the root cause of the issue and make the necessary repairs to resolve the code.

Frequently Asked Questions:

Q: Can OBD-II Code P085E cause any other issues with the vehicle?
A: Yes, OBD-II Code P085E can cause the gear shift lever to be stuck in Park or not shift into the correct gear, resulting in drivability issues.

Q: Can I drive my vehicle with OBD-II Code P085E?
A: It is not recommended to drive your vehicle with OBD-II Code P085E, as it can cause drivability issues and potentially damage the transmission.

Q: Can I reset OBD-II Code P085E without repairing the issue?
A: It is not recommended to reset OBD-II Code P085E without repairing the root cause of the issue, as the code will likely reappear and the issue will persist.

Q: How much does it cost to repair OBD-II Code P085E?
A: The cost of repairing OBD-II Code P085E will depend on the root cause of the issue, which may require replacing the Gear Shift Control Module B, shift lock solenoid, wiring, or brake pedal switch.

Q: Can I repair OBD-II Code P085E myself?
A: Repairing OBD-II Code P085E requires some basic knowledge of the vehicle’s electrical system and the use of diagnostic tools. If you are not comfortable diagnosing and repairing the issue yourself, it is recommended to seek the assistance of a professional mechanic.

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