AutoCodes – Honda – P0843 2020 Honda CR-V

P0843 2020 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

Quick Answer

The Continuously Variable Transmission (CVT) driven pulley pressure sensor uses a strain gauge. Common causes include Faulty CVT Driven Pulley Pressure Sensor, CVT Driven Pulley Pressure Sensor harness is open or shorted, CVT Driven Pulley Pressure Sensor circuit poor electrical connection. 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 2020 Honda CR-V indicates Transmission Fluid Pressure Sensor/Switch 'A' Circuit High.
Common causes: Common causes include Faulty CVT Driven Pulley Pressure Sensor, CVT Driven Pulley Pressure Sensor harness is open or shorted, CVT Driven Pulley Pressure Sensor circuit poor electrical connection.
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.

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Code Popularity 426

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 30, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0843 2020 Honda CR-V Description

The Continuously Variable Transmission (CVT) driven pulley pressure sensor uses a strain gauge. The output voltage changes depending on the driven pulley pressure. The Powertrain Control Module (PCM) sends a 5 V reference voltage to the sensor through a pull-up resistor. When the driven pulley pressure is low, the sensor resistance decreases and the PCM detects a low signal voltage. Conversely, when the driven pulley pressure is high, the sensor resistance increases, and the PCM detects a high signal voltage. If the CVT driven pulley pressure sensor signal voltage is a specified voltage for a set time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0843 2020 Honda CR-V - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High - AutoCodes.com — P0843 2020 Honda CR-V Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

What does this mean?

What are the Possible Causes of the DTC P0843 2020 Honda CR-V?

Faulty CVT Driven Pulley Pressure Sensor
CVT Driven Pulley Pressure Sensor harness is open or shorted
CVT Driven Pulley Pressure Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0843 2020 Honda CR-V?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0843 2020 Honda CR-V code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0843 2020 Honda CR-V code?

Need more information on how to fix the P0843 2020 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0843 2020 Honda CR-V code diagnosed by a professional: Find a repair shop in your area

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 2020 Honda CR-V Code

1. What are the common symptoms of OBDII code P0843 in a 2020 Honda CR-V?

- Common symptoms include harsh shifting, transmission slippage, illuminated Check Engine Light, and decreased fuel efficiency.

2. What does the OBDII code P0843 mean for a 2020 Honda CR-V?

- The code indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit registering a high voltage condition.

3. What are the possible causes of OBDII code P0843 in a 2020 Honda CR-V?

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

4. How can I diagnose OBDII code P0843 in my 2020 Honda CR-V?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, checking the transmission fluid level and condition, and inspecting the wiring and connectors related to the pressure sensor/switch.

5. Can I continue driving my 2020 Honda CR-V with OBDII code P0843?

- It is not recommended to continue driving with this code present, as it can lead to further transmission damage and potential safety hazards.

6. How can I repair OBDII code P0843 in my 2020 Honda CR-V?

- Repair may involve replacing the transmission fluid pressure sensor/switch, repairing or replacing damaged wiring, ensuring proper transmission fluid levels, and resetting the trouble codes.

7. Is it possible to reset OBDII code P0843 in a 2020 Honda CR-V without repairs?

- While clearing the code may temporarily turn off the Check Engine Light, it is crucial to address the underlying issue to prevent further transmission problems.

8. Are there any DIY tips for addressing OBDII code P0843 in a 2020 Honda CR-V?

- DIY enthusiasts can start by checking the transmission fluid level and condition, inspecting the sensor/switch wiring, and ensuring all connections are secure before considering professional help.

9. How long does it typically take to repair OBDII code P0843 in a 2020 Honda CR-V?

- The repair time can vary depending on the exact cause of the issue and the expertise of the technician, but it may take a few hours to a full day for thorough diagnosis and repair.

10. Will fixing OBDII code P0843 in a 2020 Honda CR-V be costly?

- The repair cost can vary based on the specific repairs needed, parts required, and labor rates, but addressing the issue promptly can help prevent more significant transmission damage and expenses in the long run.