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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 510 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0451-P0454: Fuel Tank Pressure Sensor >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

P0451 

This DTC will set if the controller is unable to re-zero the fuel tank pressure sensor voltage within a calibrated range during the engine-off small leak test, P0442.

P0452 

The fuel tank pressure sensor voltage is less than 0.15 V for more than 10 s.

P0453 

The fuel tank pressure sensor voltage is more than 4.9 V for more than 10 s.

P0454 

If, during the engine-off natural vacuum small leak test, P0442, the ECM detects an abrupt fuel tank pressure signal change, other than a refueling event, this DTC will set. An abrupt change is defined as a change of greater than 0.45 in H2O in the span of 1 s but less than 1 in H2O in 12.5 ms. This test must fail twice to set this DTC.

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