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P0842 2020 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low

Quick Answer

The P0842 code on a 2020 Honda CR-V indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit being too low. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch, Low transmission fluid levels, Clogged transmission filter. 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
P0842 2020 Honda CR-V indicates Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low.
Common causes
Common causes include Faulty Transmission Fluid Pressure Sensor/Switch, Low transmission fluid levels, Clogged transmission filter.
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 Sep 13, 2024
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Code P0842 2020 Honda CR-V Description

The P0842 code on a 2020 Honda CR-V indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit being too low. This sensor is responsible for monitoring the hydraulic pressure in the transmission system. When the sensor detects that the pressure is lower than the specified range, it triggers the P0842 code. This issue can lead to improper shifting of gears, decreased fuel efficiency, and potential damage to the transmission system if left unaddressed.

OBDII Code P0842 2020 Honda CR-V - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2020 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low

Common Causes of P0842 2020 Honda CR-V

  1. Faulty Transmission Fluid Pressure Sensor/Switch
  2. Low transmission fluid levels
  3. Clogged transmission filter
  4. Malfunctioning transmission pump
  5. Wiring or electrical issues in the sensor circuit

Symptoms of P0842 2020 Honda CR-V

  1. Delayed or rough shifting of gears
  2. Transmission slipping
  3. Illumination of the Check Engine Light
  4. Reduced fuel efficiency
  5. Transmission overheating

How to Fix P0842 2020 Honda CR-V

  1. Begin by checking the transmission fluid level and condition. If the fluid is low or dirty, it should be topped up or replaced.
  2. Inspect the transmission filter for any clogs or debris. Replace the filter if necessary.
  3. Test the Transmission Fluid Pressure Sensor/Switch 'A' Circuit for proper operation. Replace the sensor if it is found to be faulty.
  4. Check the wiring and connections in the sensor circuit for any damage or corrosion. Repair or replace any damaged components.
  5. Clear the trouble codes from the vehicle's computer and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0842 2020 Honda CR-V

The cost of repairing the Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low issue on a 2020 Honda CR-V can vary depending on the specific cause of the problem. In general, the cost of replacing a faulty sensor can range from $150 to $300, including parts and labor. If additional repairs or maintenance tasks are required, such as replacing the transmission filter or topping up the transmission fluid, the total cost may increase. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needs of your vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.

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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 P0842 2020 Honda CR-V Code

1. What are the common symptoms of OBDII code P0842 on a 2020 Honda CR-V?

- Common symptoms include harsh shifting, transmission slipping, poor fuel economy, and an illuminated check engine light.

2. What can cause the Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low code on a 2020 Honda CR-V?

- Possible causes can include a faulty transmission fluid pressure sensor/switch, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module.

3. How serious is OBDII code P0842 on a 2020 Honda CR-V?

- Ignoring this code can lead to further damage to the transmission, potentially resulting in costly repairs. It is recommended to address the issue promptly.

4. How can I diagnose the cause of OBDII code P0842 on my 2020 Honda CR-V?

- Diagnosing this code typically involves checking the transmission fluid level and condition, inspecting the sensor/switch and related wiring, and using a scan tool to monitor sensor data.

5. Can I continue driving my 2020 Honda CR-V with OBDII code P0842?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to transmission issues and potential safety hazards. It is best to have the problem diagnosed and repaired as soon as possible.

6. How much does it typically cost to repair OBDII code P0842 on a 2020 Honda CR-V?

- The cost of repairs can vary depending on the exact cause of the issue. It may involve replacing the sensor/switch, repairing wiring, or addressing other transmission-related issues. Costs can range from a few hundred to over a thousand dollars.

7. Are there any DIY tips for fixing OBDII code P0842 on a 2020 Honda CR-V?

- While some DIY enthusiasts may attempt to diagnose and repair this code, it is recommended to seek professional help due to the complexity of transmission systems. However, checking for loose connections or damaged wires could be a starting point.

8. Can a faulty transmission fluid pressure sensor/switch cause other issues besides OBDII code P0842?

- Yes, a faulty sensor/switch can cause various transmission-related problems, such as erratic shifting, transmission slipping, and decreased fuel efficiency.

9. Is it possible for a low transmission fluid level to trigger OBDII code P0842 on a 2020 Honda CR-V?

- Yes, a low transmission fluid level can affect the pressure readings in the system, leading to the triggering of code P0842. It is essential to maintain the proper fluid level to avoid such issues.

10. How long does it take to repair OBDII code P0842 on a 2020 Honda CR-V?

- The repair time can vary based on the specific cause of the code and the availability of parts. In general, it may take a few hours to a full day for a professional mechanic to diagnose and fix the issue.

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