Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer detected that the car tried to go into reverse while it was moving too fast, which is not allowed.
The transmission control system detected an attempt to engage reverse gear at a speed higher than the permitted limit, which could damage the transmission.
The P185B code indicates that the transmission control module (TCM) has detected an attempt to engage the reverse gear while the vehicle is traveling at a speed that exceeds the safe limit set by the manufacturer. This is typically controlled by the pressure control solenoid, which manages the hydraulic pressure needed for gear changes.
• Check Engine Light is on
• Inability to engage reverse gear
• Unexpected shifting behavior
• Faulty pressure control solenoid
• Transmission control module (TCM) malfunction
• Wiring issues or poor connections
Transmission Control Module (TCM): A computer that controls the transmission's operation.
Pressure Control Solenoid: A component that regulates hydraulic pressure in the transmission.
• Check for any other related trouble codes.
• Inspect the wiring and connections to the pressure control solenoid.
• Test the pressure control solenoid for proper operation.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module (TCM) if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Avoid shifting into reverse while moving.
• Regularly maintain the transmission system.
• Ensure proper electrical connections.
Transmission Control Issue
• Do not attempt to shift into reverse while driving.
• Have the vehicle inspected by a professional if this code appears.
Check with your vehicle manufacturer. Transmission components may be covered under powertrain warranty.
This code is relatively rare and typically occurs due to improper shifting or component failure.
High – Continuing to drive with this issue can cause severe transmission damage.
Driving with a malfunctioning transmission can be dangerous. Address this issue promptly to ensure vehicle safety.
• Vehicle must be driven at varying speeds.
• Attempt to engage reverse gear to verify the issue.
The pressure control solenoid is located inside the transmission, typically accessible by removing the transmission pan.
Q: Can I drive with a P185B code?
A: It's not recommended to drive with this code active as it can lead to severe transmission damage.
Q: What happens if I ignore this code?
A: Ignoring this code can result in major transmission failure, leading to costly repairs.
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