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 BUICK - 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 Buick Models:
2001-2005 Buick LeSabre, Park Avenue
2002-2007 Buick Rendezvous, Rendezvous AWD
2005-2007 Buick Terraza, Terraza EXT, Terraza 4WD
2005-2008 Buick Allure (Canada Only), LaCrosse
2006-2008 Buick Lucerne

What does this mean?

Possible symptoms

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

P0842 BUICK 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 Buick - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low - itimaster.ru

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P0842 BUICK 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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