Transmission Fluid Pressure Switch ‘A’ 2nd Clutch Circuit Low


Table of contents

P0842 ACURA Possible Causes

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

How do I fix code P0842 ACURA?

  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.

Cost of diagnosing the P0842 ACURA code

  The cost of diagnosing the P0842 ACURA 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)

P0842 ACURA 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).

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