Sierra, Silverado 2006-2007

6.6L V8 VIN 2 Auto 1

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6.6L V8 VIN 2 Auto

Trouble Code: C0287



Delivered Torque Signal Malfunction

Possible Causes:

Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:



Testing for Electrical Intermittents
 
Testing for Intermittent Conditions and Poor Connections
 
Wiring Repairs
 
Connector Repairs
 

Trouble Code: C0298



Powertrain Control Malfunction

Possible Causes:

C0298 A requested torque signal malfunction is only one possible cause for the PCM to lose the ability to perform traction control. DTC C0298 may set due to engine overheating, throttle actuator control failure, loss of ignition timing control by the PCM, etc. If DTC P0856 has not set, refer to the following in order to identify other possible causes of DTC C0298:



Symptoms - Engine Controls for the 4.3L engine
 
Symptoms - Engine Controls for the 8.1L engine
 
Symptoms - Engine Controls for the 4.8L, 5.3L, and 6.0L engines
 
Symptoms - Engine Controls for the 6.6L (LBZ and LLY) engine
 



Testing for Electrical Intermittents
 
Testing for Intermittent Conditions and Poor Connections
 
Connector Repairs
 
Wiring Repairs
 

Trouble Code: P0016



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

Possible Causes:



Inspect for any recent engine mechanical repairs. An incorrectly installed camshaft or crankshaft will cause this DTC to set.
 
If P0016 sets the fuel injectors will be commanded OFF and the engine will not start.
 

Trouble Code: P003A



Turbocharger Boost Control Position Not Learned

Possible Causes:



If there is a loss of ignition voltage to ECM terminal C1-76 this DTC may set. Verify this circuit is not shorted to ground or open. Verify the supply fuse for this circuit is not open.
 
If any service has been performed on the turbocharger or on the turbocharger components, a turbocharger relearn must be performed. Failure to perform the turbocharger learn procedure may cause other DTCs to set. Refer to Turbocharger Learn .
 

Trouble Code: P0045



Turbocharger Boost Control Solenoid Control Circuit

Possible Causes:



If there is a loss of ignition voltage to terminal C1-76 at the ECM this DTC may set. Verify the circuit is not shorted to ground, open, or has an open supply fuse.
 
Engine running, increase the engine speed to 1,500 RPM and maintain. With a scan tool, command the TC Vane Pos. Ctrl. Solenoid ON and OFF. The TC Vane Position Sensor parameter should increase to 95-97 percent when the TC solenoid is commanded ON and decrease to near 0 percent when commanded OFF.
 

Trouble Code: P0087



Fuel Rail Pressure (FRP) Too Low

Possible Causes:

P0087



Gasoline contamination of the fuel may cause this DTC to set. Refer to Contaminants-in-Fuel Diagnosis .
 
When ambient temperatures are below 0°C (32°F), the fuel tank pickup screen may be iced over from water in the fuel tank.
 
When power enhancing devices have been attached to the fuel rail pressure sensor circuits, this DTC may set and adversely effect the fuel system components.
 
If the fuel pressure valve is not torqued correctly, the valve will leak fuel into the fuel return system causing this DTC to set. The fuel pressure relief valve uses a bite type seal, and proper torque is essential for valve to rail sealing. Refer to Fastener Tightening Specifications .
 
A sticking FRP regulator may cause this DTC to set.
 
High fuel injector return flow may cause this DTC to set.
 
The addition of fuel system enhancements, such as auxiliary fuel tanks or add on fuel filters may relate to driveability complaints.
 



Driveability concerns may not occur with this DTC present.
 
If the fuel system pressure is actually too high, a fuel knock and smoke condition will exist.
 
A sticking FRP regulator may cause this DTC to set.
 

Trouble Code: P0088



Fuel Rail Pressure (FRP) Too High

Possible Causes:

P0087



Gasoline contamination of the fuel may cause this DTC to set. Refer to Contaminants-in-Fuel Diagnosis .
 
When ambient temperatures are below 0°C (32°F), the fuel tank pickup screen may be iced over from water in the fuel tank.
 
When power enhancing devices have been attached to the fuel rail pressure sensor circuits, this DTC may set and adversely effect the fuel system components.
 
If the fuel pressure valve is not torqued correctly, the valve will leak fuel into the fuel return system causing this DTC to set. The fuel pressure relief valve uses a bite type seal, and proper torque is essential for valve to rail sealing. Refer to Fastener Tightening Specifications .
 
A sticking FRP regulator may cause this DTC to set.
 
High fuel injector return flow may cause this DTC to set.
 
The addition of fuel system enhancements, such as auxiliary fuel tanks or add on fuel filters may relate to driveability complaints.
 



Driveability concerns may not occur with this DTC present.
 
If the fuel system pressure is actually too high, a fuel knock and smoke condition will exist.
 
A sticking FRP regulator may cause this DTC to set.
 

Trouble Code: P0090



Fuel Pressure Regulator Control Circuit

Possible Causes:



There are no driveability concerns associated with the FRP regulator unless a DTC is present. The most likely cause of this DTC is a sticking FRP regulator.
 
If the fuel system pressure is actually too high, a fuel knock and smoke condition will exist.
 
If the fuse that supplies voltage to terminal C1-76 of the ECM is open, this DTC will set.
 

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: 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.
 

Trouble Code: P0102



Mass Air Flow (MAF) Sensor Circuit Low Voltage

Possible Causes:



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 29-39 g/s at idle to greater than 380 g/s at the time of the 1-2 shift.
 
Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0103



Mass Air Flow (MAF) Sensor Circuit High Voltage

Possible Causes:



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 29-39 g/s at idle to greater than 380 g/s at the time of the 1-2 shift.
 
Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0106



Manifold Absolute Pressure (MAP) Sensor Performance

Possible Causes:



A slight resistance of 20-30 ohms on the 5-volt reference or low reference circuits may cause this DTC to set.
 
Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0107



Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

Possible Causes:



Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0108



Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

Possible Causes:



Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0112



Intake Air Temperature (IAT) Sensor Circuit Low Voltage

Possible Causes:



If the engine is cold and the ignition is turned ON, a properly functioning IAT sensor 1 will gradually increment to a higher value. This is due to the heat that is generated by the MAF sensor heating elements.
 
Depending on the ambient temperature, an IAT sensor 1 signal circuit or low reference circuit that is shorted to the MAF sensor signal circuit can cause a DTC P0113 to set.
 
An IAT sensor 1 signal circuit that is shorted to the MAF sensor ignition circuit can cause a DTC P0113 to set.
 
Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0113



Intake Air Temperature (IAT) Sensor Circuit High Voltage

Possible Causes:



If the engine is cold and the ignition is turned ON, a properly functioning IAT sensor 1 will gradually increment to a higher value. This is due to the heat that is generated by the MAF sensor heating elements.
 
Depending on the ambient temperature, an IAT sensor 1 signal circuit or low reference circuit that is shorted to the MAF sensor signal circuit can cause a DTC P0113 to set.
 
An IAT sensor 1 signal circuit that is shorted to the MAF sensor ignition circuit can cause a DTC P0113 to set.
 
Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
 

Trouble Code: P0116



Engine Coolant Temperature (ECT) Sensor Performance

Possible Causes:



A snapshot is the quickest method to capture the ECT and the IAT sensor 2 data before it changes.
 
An IAT sensor 2 that is skewed low can cause this DTC to set.
 
A high resistance short from the signal circuit to the low reference circuit can cause this DTC to set.
 

Trouble Code: P0117



Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

Possible Causes:



An ECT sensor signal circuit or low reference circuit that is shorted to another 5-volt reference circuit can cause DTC P0118 to set.
 

Trouble Code: P0118



Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

Possible Causes:



An ECT sensor signal circuit or low reference circuit that is shorted to another 5-volt reference circuit can cause DTC P0118 to set.
 

Trouble Code: P0121



Throttle Position (TP) Sensor Performance

Trouble Code: P0122



Throttle Position (TP) Sensor Circuit Low Voltage

Trouble Code: P0123



Throttle Position (TP) Sensor Circuit High Voltage

Trouble Code: P0128



Engine Coolant Temperature (ECT) Below Thermostat Temperature

Possible Causes:



DTC P0128 is designed to detect for a stuck open thermostat.
 

Trouble Code: P0168



Engine Fuel Over-Temperature

Trouble Code: P0181



Fuel Temperature Sensor Performance

Trouble Code: P0182



Fuel Temperature Sensor Circuit Low Voltage

Possible Causes:



A short to a separate 5-volt source may set a DTC P0183.
 
A skewed sensor could result in poor driveability concerns.
 

Trouble Code: P0183



Fuel Temperature Sensor Circuit High Voltage

Possible Causes:



A short to a separate 5-volt source may set a DTC P0183.
 
A skewed sensor could result in poor driveability concerns.
 

Trouble Code: P0191



Fuel Rail Pressure (FRP) Sensor Performance

Trouble Code: P0192



Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage

Trouble Code: P0193



Fuel Rail Pressure (FRP) Sensor Circuit High Voltage

Trouble Code: P0201



Fuel Injector 1 Control Circuit

Trouble Code: P0202



Fuel Injector 2 Control Circuit

Trouble Code: P0203



Fuel Injector 3 Control Circuit

Trouble Code: P0204



Fuel Injector 4 Control Circuit

Trouble Code: P0205



Fuel Injector 5 Control Circuit

Trouble Code: P0206



Fuel Injector 6 Control Circuit

Trouble Code: P0207



Fuel Injector 7 Control Circuit

Trouble Code: P0208



Fuel Injector 8 Control Circuit

 
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