Solstice 2006-2008, Sky 2007-2008

2.0L L4 VIN X Std 2

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Trouble Code: P0098



Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage

Possible Causes:



Depending on the output from the turbocharger, an IAT sensor 2 signal circuit that is shorted to the boost pressure sensor signal circuit may cause the IAT Sensor 2 parameter response to be erratic or become stuck at a given value.
 

Trouble Code: P0099



Intake Air Temperature (IAT) Sensor 2 Circuit Intermittent

Possible Causes:



Depending on the output from the turbocharger, an IAT sensor 2 signal circuit that is shorted to the boost pressure sensor signal circuit may cause the IAT Sensor 2 parameter response to be erratic or become stuck at a given value.
 

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: P0100



Mass Air Flow (MAF) Sensor Circuit

Possible Causes:



The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted.
 
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.
 
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: P0101



Mass Air Flow (MAF) Sensor Performance

Possible Causes:



The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted.
 
Use a solution of dish soap and water in a spray bottle to pinpoint any suspected air leaks in the induction system and in the CAC assembly.
 
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.
 
Certain types of contaminants on the MAF sensor heating elements act as a heat insulator, which will impair the response of the sensor to airflow changes. This condition will affect the Long Term Fuel Trim adaptation value.
 
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: P0102



Mass Air Flow (MAF) Sensor Circuit Low Frequency

Possible Causes:



The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted.
 
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.
 
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:



The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted.
 
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.
 
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

Possible Causes:



The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted.
 
Use a solution of dish soap and water in a spray bottle to pinpoint any suspected air leaks in the induction system and in the CAC assembly.
 
The BARO sensor is integrated within the ECM, and it has a port on the housing that allows it to sense the ambient pressure. A buildup of contamination at this opening may hinder the operation of the BARO sensor.
 

Trouble Code: P0107



Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

Trouble Code: P0108



Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

Trouble Code: P0112



Intake Air Temperature (IAT) Sensor Circuit Low Voltage

Possible Causes:



When the engine is cold, at ignition ON, a properly functioning IAT sensor will gradually increase the scan tool IAT Sensor parameter. This is due to the heat that is generated by the MAF sensor heating elements.
 
Depending on the ambient temperature, an IAT sensor signal circuit that is shorted to the MAF sensor signal circuit can cause a DTC P0113 and/or a DTC P0114 to set. This condition may cause either a rapid fluctuation in the IAT Sensor parameter or cause it to become stuck at a given value.
 
An IAT low reference circuit that is open can cause the IAT Sensor parameter response to be sluggish.
 
A MAF sensor ground circuit that is open will cause a DTC P0113 and/or a DTC P0114 to set.
 

Trouble Code: P0113



Intake Air Temperature (IAT) Sensor Circuit High Voltage

Possible Causes:



When the engine is cold, at ignition ON, a properly functioning IAT sensor will gradually increase the scan tool IAT Sensor parameter. This is due to the heat that is generated by the MAF sensor heating elements.
 
Depending on the ambient temperature, an IAT sensor signal circuit that is shorted to the MAF sensor signal circuit can cause a DTC P0113 and/or a DTC P0114 to set. This condition may cause either a rapid fluctuation in the IAT Sensor parameter or cause it to become stuck at a given value.
 
An IAT low reference circuit that is open can cause the IAT Sensor parameter response to be sluggish.
 
A MAF sensor ground circuit that is open will cause a DTC P0113 and/or a DTC P0114 to set.
 

Trouble Code: P0114



Intake Air Temperature (IAT) Sensor Circuit Intermittent

Possible Causes:



When the engine is cold, at ignition ON, a properly functioning IAT sensor will gradually increase the scan tool IAT Sensor parameter. This is due to the heat that is generated by the MAF sensor heating elements.
 
Depending on the ambient temperature, an IAT sensor signal circuit that is shorted to the MAF sensor signal circuit can cause a DTC P0113 and/or a DTC P0114 to set. This condition may cause either a rapid fluctuation in the IAT Sensor parameter or cause it to become stuck at a given value.
 
An IAT low reference circuit that is open can cause the IAT Sensor parameter response to be sluggish.
 
A MAF sensor ground circuit that is open will cause a DTC P0113 and/or a DTC P0114 to set.
 

Trouble Code: P0115



Engine Coolant Temperature (ECT) Sensor Circuit

Trouble Code: P0116



Engine Coolant Temperature (ECT) Sensor Performance

Possible Causes:



Engine coolant that is leaking through the sensor will create a high resistance short to ground. This condition results in less voltage on the ECT sensor signal circuit, which is interpreted by the ECM as a warmer ECT.
 
The ECM memory which includes the ignition OFF timer is maintained by battery power. If the ECM or the battery are disconnected for less than 15 seconds the proper operation of the ECM memory and the timer can be disrupted. Always disconnect these components for greater than 30 seconds.
 

Trouble Code: P0117



Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

Trouble Code: P0118



Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

Trouble Code: P0119



Engine Coolant Temperature (ECT) Sensor Circuit Intermittent

Trouble Code: P0120



Throttle Position (TP) Sensor Circuit

Trouble Code: P0121



Throttle Position (TP) Sensor 1 Performance

Trouble Code: P0122



Throttle Position (TP) Sensor 1 Circuit Low Voltage

Trouble Code: P0123



Throttle Position (TP) Sensor 1 Circuit High Voltage

Trouble Code: P0128



Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

Possible Causes:



DTC P0128 occurring with insufficient vehicle interior heating is an indication of improper thermostat operation.
 
Corrosion on the ECT sensor terminals or the ECT harness connector results in a greater voltage on the ECT sensor signal circuit, which is interpreted by the ECM as a colder ECT.
 
A slight to moderate resistance in the ECT sensor signal circuit or low reference circuit will affect this diagnostic. This condition results in a greater voltage on the ECT sensor signal circuit, which is interpreted by the ECM as a colder ECT.
 

Trouble Code: P0130



HO2S Circuit Closed Loop (CL) Performance Sensor 1

Trouble Code: P0131



HO2S Circuit Low Voltage Sensor 1

Trouble Code: P0132



HO2S Circuit High Voltage Sensor 1

Trouble Code: P0133



HO2S Slow Response Sensor 1

Trouble Code: P0135



HO2S Heater Performance Sensor 1

Trouble Code: P0137



HO2S Circuit Low Voltage Sensor 2

Trouble Code: P0138



HO2S Circuit High Voltage Sensor 2

Trouble Code: P013A



HO2S Slow Response Rich to Lean Sensor 2

Trouble Code: P013E



HO2S Delayed Response Rich to Lean Sensor 2

Trouble Code: P0140



HO2S Circuit Insufficient Activity Sensor 2

Trouble Code: P0141



HO2S Heater Performance Sensor 2

Trouble Code: P0157



HO2S-22 (Bank 2 Sensor 2) Circuit Low Input

Possible Causes:



Air leaks in the exhaust system, intake manifold, vacuum lines
 
Engine misfire condition present (look for P0300 series codes)
 
Fuel system too lean (possible low fuel pressure, water in fuel)
 
HO2S signal circuit is shorted to the sensor or chassis ground
 
HO2S is damaged (i.e., cracked) or air reference hole clogged
 
ECM has failed
 

Trouble Code: P0158



HO2S-22 (Bank 2 Sensor 2) Circuit High Input

Possible Causes:



Fuel system rich (high fuel pressure, fuel pressure regulator leaking, or injector sticking)
 
HO2S element is silicon, water or fuel contaminated
 
HO2S signal tracking (water intrusion) in the connector causing a short between the HO2S signal and heater power circuits
 
ECM has failed
 

Trouble Code: P0160



HO2S-22 (Bank 2 Sensor 2) Insufficient Activity

Possible Causes:



HO2S heater is damaged or it has failed
 
HO2S signal or ground circuit has a high resistance condition
 
HO2S has failed (i.e., it is silicon, water or fuel contaminated)
 
ECM has failed
 

Trouble Code: P0161



HO2S-22 (Bank 2 Sensor 2) Heater Circuit Malfunction

Possible Causes:



HO2S heater low control circuit is open or shorted to ground
 
HO2S heater circuit is open or it is shorted to ground
 
HO2S heater power circuit is open (test O2A fuse in fuse block)
 
HO2S heater element is damaged or has failed
 
ECM has failed
 

Trouble Code: P0171



Fuel Trim System Lean (Bank 1)

Possible Causes:



Air leaks in intake manifold, exhaust pipes or exhaust manifold
 
Fuel control sensor is out of calibration (ECT, IAT or MAF)
 
Low fuel pressure (fuel filter clogged, pressure regulator failure)
 
One or more injectors restricted or pressure regulator has failed
 
HO2S element is contaminated, deteriorated or has failed
 
Vacuum hose is disconnected, broken, leaking or loose
 

Trouble Code: P0172



Fuel Trim System Rich

Possible Causes:



Base engine "mechanical" fault affecting one or more cylinders
 
EVAP system component has failed or canister fuel saturated
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel system supplying too much fuel at idle speed or at cruise
 
Fuel injector(s) is leaking or stuck partially open (one or more)
 
HO2S is contaminated, deteriorated or it has failed
 

 
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