Cruze

DTC P0458 or P0459

The evaporative emission (EVAP) canister purge valve is used to purge fuel vapour from the EVAP canister to the inlet manifold. The EVAP canister purge valve is pulse width modulated (PWM). Ignition voltage is supplied directly to the EVAP canister purge valve. The engine control module (ECM) controls the solenoid by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

P0458 00

The ECM detects the EVAP purge solenoid control circuit is open or shorted to ground.

P0459 00

The ECM detects the EVAP purge solenoid control circuit is shorted to voltage.

DTCs P0458 00, or P0459 00 are Type B DTCs.

DTCs P0458 00, or P0459 00 are Type B DTCs

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, command the EVAP purge solenoid valve to 50% and back to 0% with a scan tool. You should hear the solenoid click when commanded to 500%.
2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve.
2. Ignition ON, verify that a test lamp illuminates between the voltage supply circuit terminal 2 and ground.

⇒

If the test lamp does not illuminate, test the voltage supply circuit for a short to ground or an open/high resistance. If the circuit tests normal and the voltage supply circuit fuse F11 is open, test all components connected to the ignition voltage circuit and repair as necessary or replace the Q12 Evaporative Emission Purge Solenoid Valve.

3. Connect a test lamp between the ignition voltage circuit terminal 2 and the control circuit terminal 1.
4. Command the EVAP canister purge solenoid valve to 50% with a scan tool. The test lamp should respond to the command.

⇒	If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

5. If all circuits test normal, test or replace the Q12 Evaporative Emission Purge Solenoid Valve.

Static Test

1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve.
2. Test for 10-30 Ω between the voltage supply terminal 2 and the K20 Engine Control Module control circuit terminal 2.

⇒	If not within the specified range, replace the Q12 Evaporative Emission Purge Solenoid Valve.

3. Test for infinite resistance between each terminal and the Q12 Evaporative Emission Purge Solenoid Valve, and the housing.

⇒	If not within the specified value, replace the Q12 Evaporative Emission Purge Solenoid Valve.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.