Solstice 2006-2008, Sky 2007-2008

2.0L L4 VIN X Auto 4

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Trouble Code: P0270



Injector 4 Control Circuit Low Voltage

Trouble Code: P0270



Injector 4 Control Circuit High Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0271



Injector 4 Control Circuit High Voltage

Trouble Code: P0277



Injector 1 Leak

Possible Causes:



Test or replace the appropriate fuel injector
 

Trouble Code: P0299



Turbocharger Engine Underboost

Possible Causes:



The boost pressure sensor signal circuit is pulled high in the ECM. At ignition ON, a normal voltage measurement of the signal circuit with a DMM is 5.60 volts.
 
The CAC is connected to the turbocharger and to the throttle body by flexible duct work that requires the use of special high torque fastening clamps. These clamps cannot be substituted. In order to prevent any type of air leak when servicing the ductwork, the tightening specifications and proper positioning of the clamps is critical, and must be strictly adhered to.
 
Use a solution of dish soap and water in a spray bottle to pinpoint any air leaks.
 

Trouble Code: P029D



Injector 1 Leak

Possible Causes:



A fuel injector leak into the combustion chamber may result in mechanical damage to the cylinder.
 

Trouble Code: P029D



Injector 2 Leak

Possible Causes:



Test or replace the appropriate fuel injector
 

Trouble Code: P02A1



Injector 2 Leak

Possible Causes:



A fuel injector leak into the combustion chamber may result in mechanical damage to the cylinder.
 

Trouble Code: P02A5



Injector 3 Leak

Possible Causes:



A fuel injector leak into the combustion chamber may result in mechanical damage to the cylinder.
 

Trouble Code: P02A5



Injector 3 Leak

Possible Causes:



Test or replace the appropriate fuel injector
 

Trouble Code: P02A9



Injector 4 Leak

Possible Causes:



A fuel injector leak into the combustion chamber may result in mechanical damage to the cylinder.
 

Trouble Code: P02A9



Injector 4 Leak

Possible Causes:



Test or replace the appropriate fuel injector
 

Trouble Code: P0300



Engine Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0300



Multiple Engine Misfire Detected

Possible Causes:



Base engine mechanical fault that affects one or more cylinders
 
Fuel metering fault that affects more than one cylinder
 
Fuel pressure too low or too high, fuel supply contaminated
 
EVAP system problem or the EVAP canister is fuel saturated
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
IC control circuit is shorted to ground (an intermittent fault)
 
Ignition system fault (a coil) that affects more than one cylinder
 
MAF sensor contamination (it can cause a very lean condition)
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 1
 
Fuel delivery component fault that affects only Cylinder 1 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 1
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 2
 
Fuel delivery component fault that affects only Cylinder 2 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 2
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 3
 
Fuel delivery component fault that affects only Cylinder 3 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 3
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 4
 
Fuel delivery component fault that affects only Cylinder 4 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 4
 

Trouble Code: P0313



Crankshaft Position (CKP) System Variation Not Learned

Possible Causes:



Any worn crankshaft main bearings
 
Damaged or misaligned reluctor wheel
 
Excessive crankshaft runout
 
A damaged crankshaft
 
Interference in the signal circuit of the CKP sensor
 
Ignition switch is left in the ON position, until the battery is discharged
 
ECM power disconnect, with the ignition ON, that may have erased the * CKP system variation values
 
Debris between the CKP sensor and the reluctor wheel
 
CKP System lost Variation Learn Procedure
 
ECM has failed
 

Trouble Code: P0324



Knock Sensor (KS) Performance

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0325



Knock Sensor Circuit Malfunction

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (not mounted properly)
 
Knock sensor is damaged or has failed
 
On modules with an integrated sensor, clear the codes and retest for codes. If the same code resets, the ECM has failed.
 

Trouble Code: P0325



Knock Sensor Circuit Malfunction

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (i.e., not mounted properly)
 
Knock sensor is damaged or has failed
 
On modules with an integrated sensor, clear the codes and retest for codes. If the same code resets, the ECM has failed.
 

Trouble Code: P0326



Knock Sensor (KS) 1 Performance

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0326



Knock Sensor (KS) Circuit Low Voltage (Bank 1)

Possible Causes:



KS circuits A and B for a short to ground or an open/high resistance
 
KS circuits A and B for a short to voltage
 
KS sensor has failed
 
ECM has failed
 

Trouble Code: P0327



Knock Sensor (KS) 1 Circuit Low Voltage

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0328



Knock Sensor (KS) 1 Circuit High Voltage

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0331



Knock Sensor (KS) 2 Performance

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0332



Knock Sensor (KS) 2 Circuit Low Voltage

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0333



Knock Sensor (KS) 2 Circuit High Voltage

Possible Causes:



Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
 
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant.
 
The KS mounting surface should be free of burrs, casting flash, and foreign material.
 

Trouble Code: P0335



Crankshaft Position (CKP) Sensor Circuit

Possible Causes:



The ECM uses the camshaft position sensors to determine engine speed and position when there is a CKP sensor condition.
 
The engine will operate with a CKP sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then calculates engine speed from one of the camshaft position sensors.
 
An intermittent condition in the camshaft position (CMP) sensor circuits can cause a CKP DTC to set. Inspect the CMP sensor, harness connections, and related wiring, if you suspect this condition.
 
Test the current out-put of the signal circuit if you suspect high resistance in the circuit. The current out-put should be greater than 1 mA when measured on the 400 mA scale.
 
A low fuel condition may set DTC P0336. If the fuel tank is allowed to run dry and numerous attempts are made to restart the engine after the initial stall, DTC P0336 may set. Any other condition that results in fuel starvation where unsuccessful start attempts are made may set DTC P0336.
 

Trouble Code: P0335



Crankshaft Position Sensor Circuit Malfunction

Possible Causes:



CKP sensor signal (+) circuit or (-) circuit is open or shorted to ground
 
CKP sensor is damaged or has failed
 
ECM has failed
 

Trouble Code: P0336



Crankshaft Position (CKP) Sensor Performance

Possible Causes:



The ECM uses the camshaft position sensors to determine engine speed and position when there is a CKP sensor condition.
 
The engine will operate with a CKP sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then calculates engine speed from one of the camshaft position sensors.
 
An intermittent condition in the camshaft position (CMP) sensor circuits can cause a CKP DTC to set. Inspect the CMP sensor, harness connections, and related wiring, if you suspect this condition.
 
Test the current out-put of the signal circuit if you suspect high resistance in the circuit. The current out-put should be greater than 1 mA when measured on the 400 mA scale.
 
A low fuel condition may set DTC P0336. If the fuel tank is allowed to run dry and numerous attempts are made to restart the engine after the initial stall, DTC P0336 may set. Any other condition that results in fuel starvation where unsuccessful start attempts are made may set DTC P0336.
 

Trouble Code: P0336



Crankshaft Reference 18X Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor VREF circuit is open, or the ground (Low Reference) circuit is open
 
CKP sensor is damaged or it failed (check the crankshaft reluctor)
 
CKP sensor wiring routed close to spark plug wires (EMI/RFI)
 
ECM has failed
 

Trouble Code: P0338



Crankshaft Position (CKP) Sensor Circuit High Duty Cycle

Possible Causes:



The ECM uses the camshaft position sensors to determine engine speed and position when there is a CKP sensor condition.
 
The engine will operate with a CKP sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then calculates engine speed from one of the camshaft position sensors.
 
An intermittent condition in the camshaft position (CMP) sensor circuits can cause a CKP DTC to set. Inspect the CMP sensor, harness connections, and related wiring, if you suspect this condition.
 
Test the current out-put of the signal circuit if you suspect high resistance in the circuit. The current out-put should be greater than 1 mA when measured on the 400 mA scale.
 
A low fuel condition may set DTC P0336. If the fuel tank is allowed to run dry and numerous attempts are made to restart the engine after the initial stall, DTC P0336 may set. Any other condition that results in fuel starvation where unsuccessful start attempts are made may set DTC P0336.
 

Trouble Code: P0340



CMP Sensor Circuit Malfunction

Possible Causes:



CMP sensor signal circuit is open, shorted to ground or shorted to VREF between the sensor and the ECM
 
CMP sensor VREF circuit is open between sensor and ECM
 
CMP sensor ground circuit or "shielded" ground circuit is open
 
CMP sensor is cracked or damaged (check the reluctor wheel)
 
ECM has failed
 

Trouble Code: P0341



Intake Camshaft Position (CMP) Sensor Performance

 
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