Technical Service Bulletins

Toyota Under Pressure

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Toyota Under Pressure

Some 2007-2008 Toyota Tundra vehicles may experience power steering DTCs P0552 and/or P0553. The power steering sensor has since been changed to correct this condition.

The old/previous power steering sensor is P/N 89448-34010. This has been replaced with sensor P/N 89448-34020.

Using TIS Techstream, confirm the condition by checking for DTCs P0552 and/or P-553.

Disconnect the pressure sensor connector and proceed with removing the power steering pressure switch, which is located at the power steering vane pump and is mounted to the high pressure feed line.

Install the new power steering pressure sensor, tightening to 15.2 ft.-lbs. (20.6 Nm).

With the new sensor fully installed and connected, start the engine and check for leaks. Adjust power steering fluid level as needed.

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