LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 393 (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 Cadillac Seville and 2003 Cadillac DeVille. 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 no problem was found, see FUEL SYSTEMS in appropriate BASIC DIAGNOSTIC PROCEDURES article for possible fuel problem.

  2. 6

    An EVAP canister that is saturated will cause a rich condition. Fuel in the vacuum line to the fuel pressure regulator indicates a bad regulator. If conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failure may be at fault.

scientia non olet · About LEMON Manuals