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Home >> Pontiac >> 2002 >> Aztek FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0171: Fuel Trim System Lean >> Test Description

Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 5

    If conditions were not corrected, see appropriate BASIC DIAGNOSTIC PROCEDURES article.

  2. 6

    If conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failures may be at fault.

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