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P0843 2017 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

Quick Answer

The P0843 code on a 2017 Honda CR-V indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit being too high. Common causes include Faulty transmission fluid pressure sensor/switch, Damaged wiring or connectors 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
P0843 2017 Honda CR-V indicates Transmission Fluid Pressure Sensor/Switch 'A' Circuit High.
Common causes
Common causes include Faulty transmission fluid pressure sensor/switch, Damaged wiring or connectors 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 Sep 16, 2024
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Code P0843 2017 Honda CR-V Description

The P0843 code on a 2017 Honda CR-V indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit being too high. This sensor is responsible for monitoring the fluid pressure within the transmission and sending this information to the vehicle's engine control module (ECM). When the sensor detects that the pressure is too high, it triggers the P0843 code.

OBDII Code P0843 2017 Honda CR-V - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High
P0843 2017 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

Common Causes of P0843 2017 Honda CR-V

  1. Faulty transmission fluid pressure sensor/switch
  2. Damaged wiring or connectors in the circuit
  3. Low transmission fluid levels
  4. Malfunctioning ECM
  5. Internal transmission issues

Symptoms of P0843 2017 Honda CR-V

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Illuminated Check Engine Light
  4. Decreased fuel efficiency
  5. Transmission overheating

How to Fix P0843 2017 Honda CR-V

  1. Begin by performing a thorough inspection of the transmission fluid pressure sensor/switch and its wiring harness to check for any visible damage or corrosion.
  2. Use a multimeter to test the sensor/switch for proper resistance and voltage readings.
  3. If the sensor/switch is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying transmission issues.

Cost to Fix P0843 2017 Honda CR-V

The cost of repairing a P0843 code on a 2017 Honda CR-V can vary depending on the specific cause of the issue. On average, the cost of replacing a transmission fluid pressure sensor/switch can range from $150 to $300, including parts and labor. However, additional costs may apply if there are wiring or ECM problems that need to be addressed. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and shop type.

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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 P0843 2017 Honda CR-V Code

1. What are the common symptoms of OBDII code P0843 on a 2017 Honda CR-V?

The common symptoms of OBDII code P0843 on a 2017 Honda CR-V include harsh shifting, transmission slippage, transmission overheating, and an illuminated check engine light.

2. What does the OBDII code P0843 indicate in a 2017 Honda CR-V?

OBDII code P0843 in a 2017 Honda CR-V indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit registering high voltage.

3. What are the possible causes of OBDII code P0843 on a 2017 Honda CR-V?

Possible causes of OBDII code P0843 on a 2017 Honda CR-V include a faulty transmission fluid pressure sensor/switch, wiring issues, low transmission fluid level, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code P0843 on my 2017 Honda CR-V?

To diagnose OBDII code P0843 on a 2017 Honda CR-V, you can use an OBDII scanner to retrieve the code and then inspect the transmission fluid pressure sensor/switch, check for wiring issues, and ensure the transmission fluid level is correct.

5. What is the recommended repair for OBDII code P0843 on a 2017 Honda CR-V?

The recommended repair for OBDII code P0843 on a 2017 Honda CR-V is to replace the faulty Transmission Fluid Pressure Sensor/Switch 'A' and clear the trouble code from the vehicle's computer.

6. Can I continue driving my 2017 Honda CR-V with OBDII code P0843?

It is not recommended to continue driving your 2017 Honda CR-V with OBDII code P0843, as it can lead to further damage to the transmission. It is best to address the issue promptly.

7. How much does it cost to repair OBDII code P0843 on a 2017 Honda CR-V?

The cost to repair OBDII code P0843 on a 2017 Honda CR-V can vary depending on the labor rates in your area, the cost of parts, and whether you choose to have the repair done at a dealership or an independent repair shop.

8. Are there any DIY tips for troubleshooting OBDII code P0843 on a 2017 Honda CR-V?

While diagnosing and repairing OBDII code P0843 may require specialized tools and expertise, you can visually inspect the wiring and connectors related to the transmission fluid pressure sensor/switch for any obvious issues before seeking professional help.

9. Will resetting the check engine light resolve OBDII code P0843 on a 2017 Honda CR-V?

Simply resetting the check engine light will not resolve OBDII code P0843 on a 2017 Honda CR-V. The underlying issue causing the fault code needs to be identified and repaired to prevent the code from reoccurring.

10. How often should I check the transmission fluid level in my 2017 Honda CR-V to prevent OBDII code P0843?

It is recommended to check the transmission fluid level in your 2017 Honda CR-V as part of regular maintenance, or whenever you notice any symptoms of transmission issues, to help prevent OBDII code P0843 from occurring.

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