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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 375 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P0172 & P0175: Fuel Trim System Rich - Bank 1 & 2 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

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

    An EVAP canister that is saturated will cause a rich condition. If the conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failure may be the problem.