P085A Code - Gear Shift Control Module 'B' Communication Circuit
Quick Answer
The P085A diagnostic trouble code (DTC) indicates a problem with the communication circuit of the Gear Shift Control Module 'B'. Common causes include Faulty Gear Shift Control Module 'B', Wiring or connector issues in the communication circuit, Software glitches in the vehicle's electronic control system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P085A indicates Gear Shift Control Module 'B' Communication Circuit.
- Common causes
- Common causes include Faulty Gear Shift Control Module 'B', Wiring or connector issues in the communication circuit, Software glitches in the vehicle's electronic control system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P085A Description
The P085A diagnostic trouble code (DTC) indicates a problem with the communication circuit of the Gear Shift Control Module 'B'. This module is responsible for controlling the gear shifting process in automatic transmission vehicles. When this code is triggered, it means that there is a communication issue between the gear shift control module and other related modules or sensors in the vehicle's electronic control system.
Common Causes of P085A
- Faulty Gear Shift Control Module 'B'
- Wiring or connector issues in the communication circuit
- Software glitches in the vehicle's electronic control system
- Malfunctioning transmission sensors
- Electrical interference or signal disruption
Symptoms of P085A
- Erratic shifting behavior
- Transmission slippage
- Inability to shift gears
- Illumination of the Check Engine Light
- Transmission warning light on the dashboard
How to Fix P085A
- Diagnose the specific cause of the communication issue using a diagnostic scanner and relevant testing equipment.
- Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections.
- Test the Gear Shift Control Module 'B' for proper functionality and replace it if necessary.
- Check and recalibrate the transmission sensors to ensure accurate readings.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P085A
The cost of repairing a Gear Shift Control Module 'B' communication circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the parts for this repair can range from $200 to $500, while labor costs can add another $100 to $300. Overall, the total repair cost for this issue may fall between $300 and $800. However, it's important to note that these are rough estimates, and actual costs can differ based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It's recommended to obtain quotes from local shops for a more accurate cost estimate.
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