Aveo 2006-2007

1.6L L4 VIN 6 Auto 3

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Trouble Code: P0420



Catalyst System Low Efficiency

Possible Causes:

Inspect for the following conditions, which may cause a catalytic converter to degrade:



An engine misfire
 
High engine oil or high coolant consumption
 
Retarded spark timing
 
A weak or poor spark
 
A lean fuel mixture
 
A rich fuel mixture
 
A damaged oxygen sensor or wiring harness
 
If the condition is determined to be intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P042E



Exhaust Gas Recirculation (EGR) Closed Position Performance

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 
The scan tool 5 volt reference parameter should display between 4.8-5.2 volts.
 

Trouble Code: P0442



Evaporative Emission (EVAP) System Small Leak Detected

Possible Causes:



A condition may exist where a leak in the EVAP system exists only under a vacuum condition. Test for this condition by using a scan tool Purge/Seal function to create a vacuum, then observe the FTP parameter for a vacuum decay.
 
To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT High Intensity White Light.
 
To help locate intermittent leaks, use the J 41413-200 Evaporative Emissions System Tester (EEST) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with theJ 41413-SPT . Introducing smoke in 15 second intervals will allow less pressure into the EVAP system. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
 
Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.
 

Trouble Code: P0443



Evaporative Emission (EVAP) Purge Solenoid Control Circuit

Trouble Code: P0444



Evaporative Emission (EVAP) Purge Solenoid Control Circuit Open

Trouble Code: P0445



Evaporative Emission (EVAP) Purge Solenoid Control Circuit Shorted

Trouble Code: P0446



Evaporative Emissions (EVAP) Vent System Performance

Possible Causes:



An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the EVAP vent valve inlet or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill problem.
 

Trouble Code: P0449



Evaporative Emission (EVAP) Vent Solenoid Control Circuit

Trouble Code: P0451



Fuel Tank Pressure (FTP) Sensor Performance

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 

Trouble Code: P0452



Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 
The scan tool 5 volt reference parameter should display between 4.8-5.2 volts.
 

Trouble Code: P0453



Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 
The scan tool 5 volt reference parameter should display between 4.8-5.2 volts.
 

Trouble Code: P0454



Fuel Tank Pressure (FTP) Sensor Intermittent

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 

Trouble Code: P0455



Evaporative Emission (EVAP) System Large Leak Detected

Possible Causes:



A fuel fill cap that is left OFF after a fuel fill, will cause this DTC to set.
 
A loose, missing, or damaged fuel fill cap can cause this DTC to set.
 
A blockage or restriction in the EVAP purge solenoid, purge pipe EVAP canister, or vapor pipe, can cause this DTC to set.
 
A temporary blockage in the EVAP purge solenoid, purge pipe or EVAP canister could cause an intermittent condition. Inspect and repair any restriction in the EVAP system.
 
To help locate intermittent leaks, use the J 41413-200 Evaporative Emissions System Tester (EEST) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the J 41413-SPT High Intensity White Light. Introducing smoke in 15 second intervals will allow less pressure into the EVAP system. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
 
To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT .
 
A condition may exist where a leak in the EVAP system exists only under a vacuum condition. Test for this condition by using a scan tool Purge/Seal function to create a vacuum, then observe the FTP parameter for a vacuum decay.
 
Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.
 

Trouble Code: P0456



Evaporative Emission (EVAP) System Very Small Leak Detected

Possible Causes:



A condition may exist where a leak in the EVAP system exists only under a vacuum condition. Test for this condition by using a scan tool Purge/Seal function to create a vacuum, then observe the FTP parameter for a vacuum decay.
 
To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT High Intensity White Light.
 
To help locate intermittent leaks, use the J 41413-200 Evaporative Emissions System Tester (EEST) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with theJ 41413-SPT . Introducing smoke in 15 second intervals will allow less pressure into the EVAP system. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
 
Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.
 

Trouble Code: P0458



Evaporative Emission (EVAP) Purge Solenoid Control Circuit Open

Trouble Code: P0459



Evaporative Emission (EVAP) Purge Solenoid Control Circuit Shorted

Trouble Code: P0496



Evaporative Emissions (EVAP) System Continuous Purge Flow

Possible Causes:



Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.
 
The EVAP system tests run when engine is first started and meets the Conditions for Running the DTC. An intermittent condition could be caused by an improperly installed or damaged EVAP canister purge solenoid valve , or by a temporary blockage or restriction in the EVAP canister purge solenoid valve.
 

Trouble Code: P0498



Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Open

Trouble Code: P0499



Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Shorted

Trouble Code: P0501



Vehicle Speed Sensor (VSS) Circuit

Possible Causes:



Ensure the VSS is correctly torqued to the transmission housing.
 
This DTC may be set due to an instrument panel (I/P) cluster condition.
 

Trouble Code: P0502



Vehicle Speed Sensor (VSS) Circuit

Possible Causes:



Ensure the VSS is correctly torqued to the transmission housing.
 
This DTC may be set due to an instrument panel (I/P) cluster condition.
 

Trouble Code: P0506



Idle Speed Low

Trouble Code: P0507



Idle Speed High

Trouble Code: P050B



Ignition Timing Performance

Trouble Code: P0510



Idle Position Switch Circuit

Trouble Code: P0600



Serial Communication Link

Trouble Code: P0601



Control Module Read Only Memory (ROM)

Trouble Code: P0602



Control Module Not Programed

Trouble Code: P0607



Control Module Performance

Trouble Code: P0607



Control Module Internal Performance

Trouble Code: P061B



Control Module Torque Calculation Performance

Trouble Code: P0628



Fuel Pump Relay Control Circuit Low Voltage

Trouble Code: P0629



Fuel Pump Relay Control Circuit High Voltage

Trouble Code: P0630



VIN Not Programmed or Mismatched - Engine Control Module (ECM)

Possible Causes:



Some diagnostics will not run when the MIL is illuminated and DTC P0630 is set. Always program the VIN to the control module immediately after replacement. If there are difficulties programming the VIN, ensure that all connections to the ECM and equipment are correct. Ensure that the latest software is installed and all programming procedures are performed correctly.
 

Trouble Code: P0641



5-Volt Reference 1 Circuit

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 
The scan tool 5 volt reference parameter should display between 4.6-5.4 volts.
 



The accelerator pedal position (APP) sensor 1
 
The throttle position (TP) sensor 1
 
The throttle position (TP) sensor 2
 



The accelerator pedal position (APP) sensor 2
 
The air conditioning (A/C) refrigerant pressure sensor
 
The exhaust gas recirculation (EGR) valve
 
The fuel tank pressure (FTP) sensor
 
The intake manifold tuning (IMT) valve position sensor
 
The manifold absolute pressure (MAP) sensor
 
The rough road sensor
 

Trouble Code: P0650



Malfunction Indicator Lamp (MIL) Control Circuit

Trouble Code: P0651



5-Volt Reference 2 Circuit

Possible Causes:



If a shared 5-volt reference circuit is shorted to ground or shorted to a voltage, other 5-volt reference circuits may be affected.
 
The scan tool 5 volt reference parameter should display between 4.6-5.4 volts.
 



The accelerator pedal position (APP) sensor 1
 
The throttle position (TP) sensor 1
 
The throttle position (TP) sensor 2
 



The accelerator pedal position (APP) sensor 2
 
The air conditioning (A/C) refrigerant pressure sensor
 
The exhaust gas recirculation (EGR) valve
 
The fuel tank pressure (FTP) sensor
 
The intake manifold tuning (IMT) valve position sensor
 
The manifold absolute pressure (MAP) sensor
 
The rough road sensor
 

Trouble Code: P0660



Intake Manifold Tuning (IMT) Valve Solenoid Control Circuit

Trouble Code: P0685



Engine Controls Ignition Relay Control Circuit

Trouble Code: P0700



Transmission Control Module (TCM) Requested MIL Illumination

Possible Causes:



To clear DTC P0700 from the ECM, you must clear DTC P0700 from the TCM first.
 

 
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