Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up." property="og:description">

For Shop Owners

P0741 PONTIAC - Torque Converter Clutch Circuit Performance or Stuck Off

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

Possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty torque converter clutch solenoid valve
  • Torque converter clutch solenoid valve harness or connectors
  • Torque converter clutch solenoid valve circuit is open or shorted
  • Transmission internal mechanical problem
What does this mean?

Tech notes

There is a factory service bulletin for the following Pontiac Models:
2001-2005 Pontiac Montana, Montana EXT
2001-2005 Pontiac Aztek, Aztek AWD, Bonneville
2001-2008 Pontiac Grand Prix
2002-2005 Pontiac Montana 4WD
2005-2006 Pontiac Montana SV6 (AWD)
2005-2008 Pontiac Montana SV6, Montana SV6 EXT

What does this mean?

When is the code detected?

Lock-up does not occur when driving in lock-up range or lockup remains ON in lock-up OFF range

Possible symptoms

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

P0741 PONTIAC Description

The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lockup clutch will engage creating a 1 to 1 RPM ratio between the transmission input shaft and the rotational speed of the torque converter.

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.

OBDII Code P0741 Pontiac - Torque Converter Clutch Circuit Performance or Stuck Off - itimaster.ru

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P0741 PONTIAC 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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