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AutoCodes - Generic - P0843

P0843 Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

- Code Popularity: 50,223 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Aug 03, 2022
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|Code P0843 Possible Causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Transmission Fluid Pressure Sensor/Switch 'A'
  • Transmission Fluid Pressure Sensor/Switch 'A' harness or connectors
  • Transmission Fluid Pressure Sensor/Switch 'A' circuit is open or shorted
  • Transmission internal mechanical problem

|How do I Fix the Code P0843?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

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|Code P0843 Tech Notes













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|What is the Cost to Diagnose the Code P0843?

Labor: 1.0

The cost of diagnosing the P0843 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code P0843 Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code P0843 Description

The Torque Converter Clutch (TCC) release switch is part of the automatic Transmission Fluid Pressure (TFP) manual valve position switch. The TFP manual valve position switch is mounted to the transmission valve body. The TCC release switch is a normally-closed switch.
When the TCC is released, TCC release fluid pressure opens the TCC release switch which opens the TCC release pressure circuit. When the voltage on the circuit is high (switch open), the Powertrain Control Module (PCM) recognizes that the TCC is no longer engaged.

OBDII Code P0843 - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High - AutoCodes.com
P0843 Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

|Need More Information on the P0843 Code?

Need more information on how to fix the P0843 code? Get Access to Factory Service Manuals

|Information for Specific Makes

  • P0843 Acura Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High  
  • P0843 Buick Transmission Fluid Pressure Switch 1 Circuit High Voltage  📷
  • P0843 Cadillac Transmission Fluid Pressure Switch 1 Circuit High Voltage  📷
  • P0843 Chevrolet Transmission Fluid Pressure Switch 1 Circuit High Voltage  📷
  • P0843 Dodge Transmission Fluid Pressure Sensor/Switch 'A' Circuit High
  • P0843 GMC Transmission Fluid Pressure Switch 1 Circuit High Voltage  📷
  • P0843 Honda Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High  
  • P0843 Mercedes-Benz Transmission Fluid Pressure Sensor/Switch 'A' Circuit High

|Need Help with the P0843 Code?

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|Code P0843 comments

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