boostedgst97

so i went to local advanced and had them check my engine code this is what came back
p0096
p0103
p0128
p0455
p0442
p1101
p0496
can anybody tell me what they are for and how to get rid of them and also if anybody knows what each does

boostedgst97

anybody

Spawne32

iTrader: (1)

oh alright, if i must do it for you...

P0096 Intake Air Temperature (IAT) Sensor 2 Performance PCM
P0103 Mass Air Flow (MAF) Sensor Circuit High Frequency -PCM
P0128 Engine Coolant Temperature (ECT) Below Thermostat Regulating -PCM
P0455 Evaporative Emission (EVAP) System Large Leak Detected -PCM
P0442 Evaporative Emission (EVAP) System Small Leak Detected ECM, PCM
P1101 Intake Air Flow System Performance ECM, PCM
P0496 Evaporative Emission (EVAP) System Flow During Non-Purge -PCM

Spawne32

iTrader: (1)

ACDELCO Part # 2134222 $54.79 MASS AIRFLOW SENSOR
ACDELCO Part # 2141680 $22.79 PURGE VALVE SOLENOID
DORMAN Part # 911036 $16.79 EVAP VENT SOLENOID (Located Under Rear of Car by the gas tank)
GATES Part # 34025 $17.95 THERMOSTAT 180*

all these parts on rockauto.com for your 07 SS/SC, make sure you have your battery disconnected while doing the repairs, should fix all of your codes.

boostedgst97

thanks appreciate that alot

boostedgst97

what is the evap vent and purge valve solenoid do ? and what does it affect right now

Spawne32

iTrader: (1)

purges excess vapor from your gas tank, a leak in the system essentially causes a vacuum leak to the gas tank if the solenoid is stuck open. Throws the air fuel ratio off by a good bit.

boostedgst97

ok so thats why i smell gas after driving the car and when i checked the plugs they had black on them i figured it was running to rich wasnt sure why

Spawne32

iTrader: (1)

well with your MAF sensor down for the count you are running in limp mode, which generally forces the car to run rich as a saftey precaution. Now given the fact that you are a 07 supercharged, the IAT code may not go away with just replacing the MAF sensor. From my research the IAT sensor is part of the MAP sensor rather then the MAF sensor on your car. Which will require ACDELCO Part # 213796 MAP SENSOR as well.

Spawne32

iTrader: (1)

Actually your car does list a IAT sensor ACDELCO Part # 2133907. Gotta locate it on your manifold or your supercharger first to verify.

Spawne32

iTrader: (1)

xTooltipElement
Service Information
2007 Chevrolet Cobalt | Cobalt, G5 (VIN A) Service Manual | Document ID: 1797995
--------------------------------------------------------------------------------

DTC P0096
Circuit Description
The manifold absolute pressure (MAP) and the intake air temperature (IAT) sensor 2 are an integrated sensor. The IAT sensor 2 is a variable resistor that measures the temperature of the air entering the engine intake manifold. The powertrain control module (PCM) supplies 5 volts to the IAT sensor 2 signal circuit and a ground for the IAT sensor 2 low reference circuit. When the sensor is cold the resistance is greater. This results in a greater voltage on the signal circuit, that is interpreted by the PCM as a colder IAT. As the sensor becomes warmer the resistance decreases. This results in a lesser voltage on the IAT signal circuit, that is interpreted by the PCM as a warmer IAT. If the PCM detects an IAT sensor 2 signal voltage that is not within a calibrated range of the IAT sensor 1 signal voltage, DTC P0096 sets.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0096 Intake Air Temperature (IAT) Sensor 2 Performance

Conditions for Running the DTC
• DTCs P0097, P0098, P0111, P0112, P0113, P0116, P0117 P0118, P0125, P0128 are not set.

• DTC P0116 must run and pass.

• The ignition OFF time is greater than 8 hours.

• The ignition is ON for the initial power-up comparison.

• This DTC runs once per ignition cycle within the enabling conditions.

Conditions for Setting the DTC
The PCM detects that the IAT sensor 2 parameter is not within 16°C (29°F) of the IAT Sensor 1 parameter.

Action Taken When the DTC Sets
• The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.

• The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC
• The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.

• A current DTC, Last Test Failed, clears when the diagnostic runs and passes.

• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.

• Clear the MIL and the DTC with a scan tool.

Diagnostic Aids
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.

Step
Action
Values
Yes
No

Schematic Reference: Engine Controls Schematics

Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views

1
Did you perform the Diagnostic System Check - Vehicle?
--
Go to Step 2
Go to Diagnostic System Check - Vehicle

2
•Observe the Freeze Frame/Failure Records for this DTC.
•Turn OFF the ignition for 90 seconds.
•Start the engine.
•Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
--
Go to Step 3
Go to Testing for Intermittent Conditions and Poor Connections

3
•Turn OFF the ignition.
•Disconnect the intake air temperature (IAT) sensor 2.
•Test for an intermittent and for a poor connection at the IAT sensor 2. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.
Did you find and correct the condition?
--
Go to Step 12
Go to Step 4

4
•Disconnect the powertrain control module (PCM).
•Test for an intermittent and for a poor connection at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.
Did you find and correct the condition?
--
Go to Step 12
Go to Step 5

5
Measure the resistance of the IAT sensor 2 signal circuit between the sensor and the PCM with a DMM. Refer to Circuit Testing.

Is the resistance within the specified range?
0-10 Ω
Go to Step 6
Go to Step 8

6
Measure the resistance of the IAT sensor 2 low reference circuit between the sensor and the PCM with a DMM. Refer to Circuit Testing

Is the resistance within the specified range?
0-10 Ω
Go to Step 7
Go to Step 9

7
•Turn OFF the ignition.
•Remove the IAT sensor 2. Refer to Intake Air Temperature Sensor Replacement.
•Place the sensor on a work surface away from any heat source.
•Allow the sensor to reach the ambient air temperature for 30-60 minutes.
•Observe and record the ambient air temperature of the vehicle environment using an accurate thermometer.
•Measure the resistance of the IAT sensor 2 and record the value.
•Compare the resistance measurement of the IAT sensor 2 to the ambient air temperature on the Temperature vs. Resistance table. Refer to Temperature Versus Resistance.
Is the resistance measurement of the IAT sensor 2 within the range specified in the Temperature vs. Resistance table?
--
Go to Step 11
Go to Step 10

8
Repair the high resistance in the IAT sensor 2 signal circuit. Refer to Wiring Repairs.

Did you complete the repair?
--
Go to Step 12
--

9
Repair the high resistance in the IAT sensor 2 low reference circuit. Refer to Wiring Repairs.

Did you complete the repair?
--
Go to Step 12
--

10
Replace the IAT sensor 2. Refer to Intake Air Temperature Sensor Replacement.

Did you complete the replacement?
--
Go to Step 12
--

11
Replace the PCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?
--
Go to Step 12
--

12
•Clear the DTCs with a scan tool.
•Turn OFF the ignition for 90 seconds.
•Start the engine.
•Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
--
Go to Step 2
Go to Step 13

13
Observe the Capture Info with a scan tool.

Are there any DTCs that have not been diagnosed?
--
Go to Diagnostic Trouble Code (DTC) List - Vehicle
System OK

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