Engine-Codes - Chevrolet - P0842 CHEVROLET

P0842 CHEVROLET - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low

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

P0842 CHEVROLET 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 is the P0842 CHEVROLET code repair?

Start by checking 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

There is a factory service bulletin for the following Chevrolet Models:
2001 Chevrolet Lumina
2001-2005 Chevrolet Venture
2001-2005 Chevrolet Venture EXT
2001-2005 Chevrolet Venture 4WD
2001-2007 Chevrolet Monte Carlo
2001-2008 Chevrolet Impala
2001-2008 Chevrolet Lumina (Export Only)
2005-2008 Chevrolet Uplander
2005-2008 Chevrolet Uplander EXT
2005-2008 Chevrolet Uplander 4WD
Chevrolet Factory Service Bulletin OBDII Code P0842

What is the cost to diagnose the P0842 CHEVROLET code

Labor: 1.0

The cost to diagnose the P0842 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P0842 CHEVROLET Meaning

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.

More Information

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