AutoCodes - OBDII Code List - P0843 HONDA

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

P0843 HONDA Possible Causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty 2nd Clutch Transmission Fluid Pressure Switch
  • 2nd Clutch Transmission Fluid Pressure Switch harness or connectors
  • T2nd Clutch Transmission Fluid Pressure Switch circuit is open or shorted
  • Transmission internal mechanical problem

How do I fix code P0843 HONDA?

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.

Tech Notes





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Cost of diagnosing the P0843 HONDA code

Labor: 1.0

The cost of diagnosing the P0843 HONDA 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.

Possible Symptoms

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

P0843 Honda Description

Transmission fluid pressure switch A (2nd clutch) is installed in the hydraulic pressure circuit to the 2nd clutch. When hydraulic pressure is supplied to the 2nd clutch, the switch is turned ON. When hydraulic pressure is not supplied to the 2nd clutch, the switch is turned OFF. The signal from transmission fluid pressure switch A (2nd clutch) is input to the Powertrain Control Module (PCM). The PCM detects the hydraulic pressure supply conditions at the gear change to 2nd gear (1st to 2nd, 3rd to 2nd) to reduce the shock that occurs at the gear change. If transmission fluid pressure switch A (2nd clutch) is OFF while driving the vehicle with the rotation speed ratio of the input/output pulses is that of 2nd gear, the PCM detects a transmission fluid pressure switch A (2nd clutch) failure and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0843 Honda - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit High - AutoCodes.com

P0843 HONDA More Information

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