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Engine-Codes – Generic – P0845

P0845 Code - Transmission Fluid Pressure Sensor/Switch 'B' Circuit

Quick Answer

The P0845 code indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'B' Circuit. Common causes include Faulty transmission fluid pressure sensor/switch, Wiring or connector issues in the circuit, Low transmission fluid levels. 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
P0845 indicates Transmission Fluid Pressure Sensor/Switch 'B' Circuit.
Common causes
Common causes include Faulty transmission fluid pressure sensor/switch, Wiring or connector issues in the circuit, Low transmission fluid levels.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0845 Description

The P0845 code indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'B' Circuit. This sensor is responsible for monitoring the fluid pressure within the transmission system. It helps the vehicle's computer control the shifting of gears and ensures that the transmission operates smoothly. When this sensor detects a fault or malfunction in the circuit, it can lead to issues with gear shifting, transmission performance, and overall drivability of the vehicle.

OBDII Code P0845 - Transmission Fluid Pressure Sensor/Switch 'B' Circuit
P0845 Code - Transmission Fluid Pressure Sensor/Switch 'B' Circuit

Common Causes of P0845

  1. Faulty transmission fluid pressure sensor/switch
  2. Wiring or connector issues in the circuit
  3. Low transmission fluid levels
  4. Contaminated or degraded transmission fluid
  5. Internal transmission problems

Symptoms of P0845

  1. Harsh or delayed shifting between gears
  2. Transmission slipping or jerking
  3. Illuminated Check Engine Light
  4. Transmission overheating
  5. Loss of transmission power

How to Fix P0845

  1. Diagnose the issue by scanning the vehicle's computer for the P0845 code and conducting a visual inspection of the transmission fluid pressure sensor/switch.
  2. Check the wiring and connectors for any damage or corrosion, and repair or replace as needed.
  3. Verify the transmission fluid level and quality, topping off or changing the fluid if necessary.
  4. Test the transmission system to ensure proper operation and clear the error code from the vehicle's computer.
  5. If the issue persists, consider replacing the transmission fluid pressure sensor/switch or seeking professional help for further diagnosis and repairs.

Cost to Fix P0845

The typical repair costs for addressing a P0845 code can vary depending on the specific cause of the issue. In general, replacing a transmission fluid pressure sensor/switch can range from $150 to $300, including parts and labor. Additional costs may apply if other components need to be repaired or replaced. It's recommended to consult with a trusted mechanic or dealership for an accurate cost estimate based on your vehicle's make and model.

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Code P0845 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0845 Code

No Frequently Asked Questions about P0845 Code found.

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  • quisiera saber si el codigo p0845 que significa en un nissan al tima 2007

    Reply to Comment

  • Es possible que su Altima necesite el valve body de la transmicion. Hay un boletin de Nissan para ese problema. Ademas, Nissan extendio la garantia de las transmiciones hasta las 120,000 millas. Puede encontras mas informacion aqui: https://www.autocodes.com/cod...

    Reply to Comment