Cobalt 2006-2008, G5 2007

2.4L L4 VIN B Auto 9

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Trouble Code: P1683



Powertrain Control Module Internal Malfunction

Trouble Code: P1700



Transmission Control Module (TCM) Requested MIL Illumination

Possible Causes:



DTC P0700 can not be cleared from the ECM until the related TCM codes have been cleared.
 

Trouble Code: P1810



Transmission Fluid Pressure (TFP) Position Switch Circuit

Trouble Code: P1811



Maximum Adapt and Long Shift

Possible Causes:



Ask the customer about overloading the vehicle, exceeding the trailer towing limit, or towing in Overdrive.
 

Trouble Code: P1816



Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Park/Neutral (P/N) with Drive Ratio

Trouble Code: P1818



Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Drive without Drive Ratio

Trouble Code: P1818



Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Drive without Drive Ratio

Possible Causes:

The following conditions may also be present if any of these DTCs set:



Disables auto door lock function
 
Disables Cruise Control
 
Disables the shift interlock
 

Trouble Code: P2088



Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage

Possible Causes:



Ignition circuit for a short to ground or an open/high resistance
 
Control circuit for a short to voltage or an open/high resistance
 
Control circuit for a short to ground
 
CMP actuator solenoid
 
Faulty ECM
 

Trouble Code: P2089



Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage

Possible Causes:



Ignition circuit for a short to ground or an open/high resistance
 
Control circuit for a short to voltage or an open/high resistance
 
Control circuit for a short to ground
 
CMP actuator solenoid
 
Faulty ECM
 

Trouble Code: P2091



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

Possible Causes:



Ignition circuit for a short to ground or an open/high resistance
 
Control circuit for a short to voltage or an open/high resistance
 
Control circuit for a short to ground
 
CMP actuator solenoid
 
Faulty ECM
 

Trouble Code: P2096



Post Catalyst Fuel Trim System Low Limit

Possible Causes:



Malfunctioning fuel injectors
 
Low fuel system pressure
 
Fuel that is contaminated
 
Missing, loose, or leaking exhaust components from the HO2S forward
 
Vacuum leaks
 
Ethanol concentration greater than 15 percent
 
Incorrect PCV system operation
 

Trouble Code: P2100



Throttle Actuator Control (TAC) Motor Control Circuit

Possible Causes:



Throttle blade that is not in the rest position
 
Throttle valve that is binding open or closed
 
Throttle valve that opens or closes without spring pressure
 
Throttle body malfuntion
 
ECM has failed
 

Trouble Code: P2101



Throttle Actuator Position Performance

Trouble Code: P2101



Control Module Throttle Actuator Position Performance

Possible Causes:



Throttle blade that is not in the rest position
 
Throttle valve that is binding open or closed
 
Throttle valve that opens or closes without spring pressure
 
Throttle body malfuntion
 
ECM has failed
 

Trouble Code: P2101



Throttle Closed Position Performance

Possible Causes:



Throttle blade that is not in the rest position
 
Throttle valve that is binding open or closed
 
Throttle valve that opens or closes without spring pressure
 
Throttle body malfuntion
 
ECM has failed
 

Trouble Code: P2108



Throttle Actuator Control (TAC) Module Performance

Possible Causes:



Throttle blade that is not in the rest position
 
Throttle valve that is binding open or closed
 
Throttle valve that opens or closes without spring pressure
 
Throttle body malfuntion
 
ECM has failed
 

Trouble Code: P2119



Throttle Closed Position Performance

Trouble Code: P2119



Throttle Closed Position Performance

Possible Causes:



Throttle blade that is not in the rest position
 
Throttle valve that is binding open or closed
 
Throttle valve that opens or closes without spring pressure
 
Throttle body malfuntion
 
ECM has failed
 

Trouble Code: P2120



Accelerator Pedal Position (APP) Sensor 1 Circuit

Trouble Code: P2120



Accelerator Pedal Position Sensor 1 Signal Performance

Possible Causes:



APP sensor connector is damaged, open or shorted
 
APP1 sensor signal circuit is open or shorted to ground
 
APP1 sensor signal circuit is shorted to APP sensor 2 circuit
 
APP1 sensor signal circuit is open or shorted to VREF (5v)
 
APP sensor is damaged or it has failed
 
TAC module is damaged or it has failed
 

Trouble Code: P2122



Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

Trouble Code: P2122



Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2123



Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

Trouble Code: P2123



Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2125



Accelerator Pedal Position (APP) Sensor 2 Circuit

Trouble Code: P2125



Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2127



Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

Trouble Code: P2127



Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2128



Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

Trouble Code: P2128



Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2129



Barometric Pressure (BARO) Sensor Circuit High Voltage

Possible Causes:



Moisture in the vent inlet
 
Debris in the vent inlet
 

Trouble Code: P2135



Throttle Position (TP) Sensor 1-2 Correlation

Trouble Code: P2135



Throttle Position Sensor 1-2 Correlation Error

Possible Causes:



TP1 sensor signal circuit shorted to TP sensor signal 2 circuit
 
TP1 sensor signal circuit is shorted to the low reference circuit
 
TP2 sensor signal circuit is shorted to the low reference circuit
 
Throttle body assembly is damaged or it has failed
 

Trouble Code: P2138



Accelerator Pedal Position (APP) Sensor 1-2 Correlation

Trouble Code: P2138



Accelerator Pedal Position (APP) Sensor 1-2 Correlation

Possible Causes:



Low reference circuit of the APP sensor for a short to voltage, or an open/high resistance.
 
5-volt reference circuit for a short to ground or open/high resistance.
 
Faulty APP Sensor
 
ECM has failed
 

Trouble Code: P2176



Minimum Throttle Position Not Learned

Trouble Code: P2176



Minimum Throttle Position Not Learned

Possible Causes:



Perform the throttle learn procedure
 
Throttle body has failed.
 

Trouble Code: P2227



Barometric Pressure (BARO) Sensor Performance

Trouble Code: P2227



Barometric Pressure (BARO) Sensor Performance

Possible Causes:



Vacuum leaks
 
BARO sensor low reference circuit for an open/high resistance
 
BARO sensor 5V reference circuit for an open/high resistance or a short to ground
 
BARO sensor 5V reference circuit for a short to voltage
 
BARO sensor signal circuit terminal 3 for a short to voltage
 
BARO sensor signal circuit for an open/high resistance or a short to ground
 
BARO sensor has failed
 

Trouble Code: P2228



Barometric Pressure (BARO) Sensor Circuit Low Voltage

 
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