LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 780 (Engine Controls And Fuel - 2.0L - DTC P0010 To DTC P0299) >> DTC P0191, P0192, or P0193 >> Conditions for Setting the DTC >> P0191 Low Rationality Test

P0191 Low Rationality Test

WARNING: This page is about a different car, the 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

The fuel pressure during engine cranking is less than 120 kPa (17.4 psi), then the engine continues to run for 30 seconds after the start occurred and DTC P0087, or P2178, or P2188 is set.

scientia non olet · About LEMON Manuals