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2007 Chevrolet Trailblazer LS: Fixing P1400 and PO506 Trouble Codes in a 4x4 with 4.2L I-6 Engine

Model: 2007 Chevy Trailblazer LS Fault Code: P1400 Posted: 2014-07-29 08:55

We own a 2007 Chevrolet Trailblazer LS 4x4 with an automatic transmission, 4.2L inline-6 engine, and approximately 83,000 miles. The vehicle is currently displaying two diagnostic trouble codes: P1400 and PO50

Related fault codes

P1400

Comments (1)

Anonymous 2014-07-29 10:15

Start by addressing the PO506 code—begin with cleaning the throttle body, inspect for any vacuum leaks, and ensure the air filter is properly installed and using the correct type as specified in the owner's manual.