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." property="og:description">
For Shop Owners

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

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
What does this mean?

Tech notes

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

What does this mean?

Possible symptoms

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

P0842 CHEVROLET 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 P0842 Chevrolet - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low - itimaster.ru

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P0842 CHEVROLET Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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