Cobalt 2006-2008, G5 2007

2.2L L4 VIN F Std 1

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2.2L L4 VIN F Std

Trouble Code: P000A



Intake Camshaft Position (CMP) System Slow Response

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 

Trouble Code: P000B



Exhaust Camshaft Position (CMP) System Slow Response

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 

Trouble Code: P0010



Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0010



Intake Camshaft Position (CMP) System Performance

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0011



Intake Camshaft Position (CMP) System Performance

Possible Causes:



Control circuit for an open or high resistance
 
Torn,restricted, mis-positioned, or missing screens at the CMP actuator solenoid
 
Oil leaks between the oil sealing lands of the CMP actuator solenoid
 
Lands of the CMP actuator solenoid for nicks
 
Crankshaft reluctor wheel for being mis-positioned
 
Oil seepage at the CMP actuator solenoind connector
 

Trouble Code: P0013



Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0014



Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit (Bank 1)

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0016



Crankshaft Position (CKP) - Camshaft Position (CMP) Correlation

Possible Causes:



Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, crankshaft, or timing chain can cause this DTC to set.
 

Trouble Code: P0016



Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation

Possible Causes:



Timing chain tensioner condition
 
Incorrectly installed timing chain
 
Excessive play in the timing chain
 
Cam actuator that is stuck in the full advance or retard position
 
Crankshaft reluctor wheel that has moved in relationship to top dead * Center (TDC) on the crankshaft
 

Trouble Code: P0017



Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation

Possible Causes:



Timing chain tensioner condition
 
Incorrectly installed timing chain
 
Excessive play in the timing chain
 
Cam actuator that is stuck in the full advance or retard position
 
Crankshaft reluctor wheel that has moved in relationship to top dead * Center (TDC) on the crankshaft
 

Trouble Code: P0030



O2S Heater Control Circuit Bank 1 Sensor 1

Trouble Code: P0030



HO2S Heater Control Circuit Sensor 1

Trouble Code: P0030



HO2S Heater Control Circuit Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0031



HO2S Heater Control Circuit Low Voltage Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0032



HO2S Heater Control Circuit High Voltage Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0033



Supercharger Bypass Valve Solenoid Control Circuit

Possible Causes:



For additional information, review the Boost Control System Description. Refer to Boost Control System Description .
 
If the condition is intermittent, refer to Inducing Intermittent Fault Conditions and Intermittent Conditions .
 

Trouble Code: P0036



O2S Heater Control Circuit Bank 1 Sensor 2

Trouble Code: P0036



HO2S Heater Control Circuit Sensor 2

Trouble Code: P0036



HO2S Heater Control Circuit Sensor 2

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0037



HO2S Heater Control Circuit Low Voltage Sensor 2

Possible Causes:



HO2S low control circuit is shorted to system power (B+)
 
HO2S low control circuit driver is shorted inside the ECM
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0038



HO2S Heater Control Circuit High Voltage Sensor 2

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0053



HO2S Heater Resistance Sensor 1

Trouble Code: P0054



HO2S Heater Resistance Sensor 2

Trouble Code: P0068



Throttle Body Airflow Performance

Possible Causes:



Inspect for the following conditions:

The throttle blade for damage
 
A skewed cam sensor signal--Inspect for signals that are intermittently shorted to ground, causing a fluctuating RPM on the scan tool.
 

If the condition is intermittent, refer to Intermittent Conditions .
 

Trouble Code: P0068



Throttle Body Airflow Performance

Trouble Code: P0069



Supercharger Inlet Pressure (SCIP) - Barometric Pressure (BARO) Correlation

Trouble Code: P0096



Intake Air Temperature (IAT) Sensor 2 Performance

Possible Causes:



Important: Determine the ambient temperature by using an accurate thermometer. If the ignition has been OFF for 8 hours or more, the IAT Sensor 1 parameter, the IAT Sensor 2 parameter and the ECT Sensor parameter should be within 15°C (27°F) of each other and also the ambient temperature. Turn ON the ignition, and immediately observe the parameters. Compare those sensor parameters to each other and also to the ambient temperature, to determine if the IAT Sensor 2 parameter is skewed.
 

Trouble Code: P0097



Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage

Trouble Code: P0098



Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage

Trouble Code: P009A



Intake Air Temperature (IAT)-Ambient Air Temperature (AAT) Correlation

Possible Causes:



AAT sensor reference circuit high resistance
 
AAT sensor cinal circuit high resistance
 
AAT sensor has failed
 
ECM has failed
 

Trouble Code: P0101



Mass Air Flow (MAF) System Performance

Possible Causes:



Inspect the harness of the MAF sensor to verify that it is not routed too close to the following components:

Any aftermarket accessories--Refer to Checking Aftermarket Accessories .
 
Any solenoids
 
Any relays
 
Any motors
 

A wide open throttle acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-6 g/s at idle to 120 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.A skewed or stuck engine coolant temperature (ECT) or IAT sensor will cause the calculated models to be inaccurate and may cause this DTC to run when it shouldn't.A steady or intermittent high resistance of 15 ohms or more on the ignition 1 voltage circuit will cause the MAF sensor values to be skewed high by up to 60 g/s, and may cause this DTC to set. A high resistance will cause a driveability concern before this DTC sets.The BARO that is used by the ECM to calculate the air flow models is initially based on the MAP sensor at key ON. When the engine is running, the ECM will continually update the BARO value near wide open throttle using the MAP sensor and a calculation. A skewed MAP sensor will cause the calculated mass air flow value to be inaccurate and may result in a no start condition. With the ignition ON and the engine OFF, the MAP Sensor parameter varies with the altitude. 101 kPa is the approximate value near sea level. This value will decrease by approximately 3 kPa for every 305 meters (1,000 feet) of altitude.A high resistance on the low reference circuit of the MAP sensor will skew the sensor value and may cause this DTC to set.If the condition is intermittent, refer to Inducing Intermittent Fault Conditions and Intermittent Conditions .
 

Trouble Code: P0101



Mass Air Flow (MAF) Sensor Performance

Possible Causes:



A steady or intermittent high resistance of 15 ohms or greater on the ignition 1 voltage circuit will cause the MAF sensor signal to be increased by as much as 60 g/s. To pinpoint this condition perform a voltage drop test on the circuit.
 
Any type of contamination on the MAF sensor heating elements will degrade the proper operation of the sensor. Certain types of contaminants act as a heat insulator, which will impair the response of the sensor to airflow changes. Water or snow can create the opposite effect, and cause the signal to increase rapidly.
 
Depending on the current ambient temperature, and the vehicle operating conditions, a MAF sensor signal circuit that is shorted to the IAT signal circuit will increase or decrease the MAF sensor signal that is interpreted by the ECM. Additionally it may cause a rapid fluctuation in the IAT Sensor parameter.
 
A skewed or stuck engine coolant temperature (ECT) or IAT sensor will cause the calculated models to be inaccurate and may cause this DTC to run when it should not. Refer to Temperature Versus Resistance .
 

Trouble Code: P0102



Mass Air Flow (MAF) Sensor Circuit Low Frequency

Possible Causes:



Inspect for any contamination or debris on the sensing elements of the MAF sensor.
 
A wide open throttle (WOT) acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-6 g/s at idle to 120 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
 
A high resistance of 15 ohms or more on the ground circuit or the ignition 1 circuit of the MAF sensor may cause this DTC to set. A high resistance will cause a driveability concern before this DTC sets.
 
If the condition is intermittent, refer to Intermittent Conditions and Inducing Intermittent Fault Conditions .
 

Trouble Code: P0102



Mass Air Flow (MAF) Sensor Circuit Low Frequency

Possible Causes:



A steady or intermittent high resistance of 15 ohms or greater on the ignition 1 voltage circuit will cause the MAF sensor signal to be increased by as much as 60 g/s. A slightly greater resistance can cause the signal to cease. To pinpoint this condition perform a voltage drop test on the circuit.
 
Any type of contamination on the MAF sensor heating elements will degrade the proper operation of the sensor. Certain types of contaminants act as a heat insulator, which will impair the response of the sensor to airflow changes. Water or snow can create the opposite effect, and cause the signal to increase rapidly.
 
Depending on the current ambient temperature, and the vehicle operating conditions, a MAF sensor signal circuit that is shorted to the IAT signal circuit will increase or decrease the MAF sensor signal that is interpreted by the ECM. Additionally it may cause a rapid fluctuation in the IAT Sensor parameter.
 

Trouble Code: P0103



Mass Air Flow (MAF) Sensor Circuit High Frequency

Possible Causes:



Inspect the Air Induction System for any water intrusion. The water rapidly cools the hot sensing elements in the sensor causing a false indication of excessive air flow. Any water that reaches the MAF sensor will skew the sensor and may cause this DTC to set.
 
A poor connection at the fuse for the ignition 1 voltage circuit of the MAF sensor may cause this DTC to set.
 
If the condition is intermittent, refer to Intermittent Conditions and Inducing Intermittent Fault Conditions .
 

Trouble Code: P0103



Mass Air Flow (MAF) Sensor Circuit High Frequency

Possible Causes:



A steady or intermittent high resistance of 15 ohms or greater on the ignition 1 voltage circuit will cause the MAF sensor signal to be increased by as much as 60 g/s. A slightly greater resistance can cause the signal to cease. To pinpoint this condition perform a voltage drop test on the circuit.
 
Any type of contamination on the MAF sensor heating elements will degrade the proper operation of the sensor. Certain types of contaminants act as a heat insulator, which will impair the response of the sensor to airflow changes. Water or snow can create the opposite effect, and cause the signal to increase rapidly.
 
Depending on the current ambient temperature, and the vehicle operating conditions, a MAF sensor signal circuit that is shorted to the IAT signal circuit will increase or decrease the MAF sensor signal that is interpreted by the ECM. Additionally it may cause a rapid fluctuation in the IAT Sensor parameter.
 

Trouble Code: P0106



Manifold Absolute Pressure (MAP) Sensor Performance

Trouble Code: P0106



Manifold Absolute Pressure (MAP) Sensor Performance

Possible Causes:



A wide open throttle (WOT) acceleration from a stop should cause the MAP sensor parameter on the scan tool to increase rapidly to near the BARO Sensor parameter at the time of the 1-2 shift.
 
A skewed or stuck engine coolant temperature (ECT) sensor or intake air temperature (IAT) sensor will cause the calculated models to be inaccurate and may cause this DTC to run when it should not. Refer to Temperature Versus Resistance .
 

Trouble Code: P0107



Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

Trouble Code: P0108



Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

 
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