Engine-CodesAcura – P0843 Acura

P0843 Acura Code - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High

Quick Answer

The P0843 code for Acura vehicles indicates an issue with the Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit being too high. Common causes include Faulty Transmission Fluid Pressure Switch 'A', 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
P0843 Acura indicates Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High.
Common causes
Common causes include Faulty Transmission Fluid Pressure Switch 'A', 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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0843 Acura Description

The P0843 code for Acura vehicles indicates an issue with the Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit being too high. This switch is responsible for monitoring the pressure levels in the transmission system, specifically in the 2nd clutch circuit. When the pressure is too high, it can lead to various problems in the transmission, affecting the vehicle's performance and overall drivability.

OBDII Code P0843 Acura - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High
P0843 Acura Code - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High

Common Causes of P0843 Acura

  1. Faulty Transmission Fluid Pressure Switch 'A'
  2. Low transmission fluid levels
  3. Clogged transmission filter
  4. Internal transmission problems
  5. Wiring or electrical issues

Symptoms of P0843 Acura

  1. Harsh or delayed shifting between gears
  2. Transmission slipping
  3. Transmission overheating
  4. Transmission fluid leaks
  5. Illumination of the Check Engine Light

How to Fix P0843 Acura

  1. Begin by checking the transmission fluid level and condition. Top off or replace the fluid if necessary.
  2. Inspect the Transmission Fluid Pressure Switch 'A' for any signs of damage or malfunction. Replace if needed.
  3. Check the transmission filter for any debris or clogs. Clean or replace the filter as required.
  4. Inspect the wiring and connectors related to the transmission pressure switch for any damage or corrosion. Repair or replace as needed.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test drive to ensure the issue has been resolved.

Cost to Fix P0843 Acura

The typical repair costs for addressing the P0843 code in Acura vehicles can range from $200 to $500, depending on the specific cause of the issue and the labor rates in your area. This estimate includes the cost of parts such as a new pressure switch, transmission fluid, and filters, as well as the labor charges for diagnosis and repair. Keep in mind that prices may vary based on location, vehicle make and model, and the extent of the damage. It's recommended to get multiple quotes from reputable auto repair shops to get the best deal.

Tech Notes for P0843 Acura





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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 Acura Code

What are common symptoms of OBDII code P0843 in an Acura?

Common symptoms include harsh shifting, transmission slipping, difficulty engaging gears, and illuminated warning lights on the dashboard.

What are possible causes of OBDII code P0843 in an Acura?

Possible causes include a faulty transmission fluid pressure switch, damaged wiring or connectors in the circuit, low transmission fluid levels, or internal transmission issues.

How can I diagnose OBDII code P0843 in my Acura?

Diagnosing this code typically involves using a scan tool to read the code, checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, and testing the transmission fluid pressure switch.

Can I continue driving my Acura with OBDII code P0843?

It is not recommended to continue driving your Acura with this code present, as it can lead to further transmission damage and potentially unsafe driving conditions.

How can I repair OBDII code P0843 in my Acura?

Repairing this code may involve replacing the transmission fluid pressure switch, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the fault codes.

Is it possible to reset OBDII code P0843 in an Acura without repairs?

While you can clear the code using a scan tool, it is recommended to diagnose and repair the underlying issue to prevent further damage to the transmission.

Can a DIY enthusiast fix OBDII code P0843 in an Acura?

Depending on your experience and tools available, you may be able to replace the transmission fluid pressure switch or inspect wiring, but more complex repairs may require professional expertise.

What are the potential risks of ignoring OBDII code P0843 in an Acura?

Ignoring this code can lead to transmission failure, increased repair costs, and compromised vehicle performance and safety.

Should I seek professional help for OBDII code P0843 in my Acura?

For proper diagnosis and repair of this code, it is recommended to seek assistance from a qualified mechanic or dealership with experience in Acura transmissions.

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