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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Engine Controls And Fuel - 2.0L - DTC P000A To DTC P0238) >> 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 2010 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 s after the start occurred and DTC P0087, P2178, or P2188 is set.

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