Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 146 (ENGINE CONTROL SYSTEM - 3.6L (LY7) - INTRODUCTION (1 OF 2))DIAGNOSTIC INFORMATION & PROCEDURESSCAN TOOL DATA LIST
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Scan Tool Data List
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Scan Tool Data List
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.
Use the Engine Scan Tool Data List only after the following conditions are determined:
- The Diagnostic System Check - Vehicle is completed.
- There are no diagnostic trouble codes (DTCs).
- The on-board diagnostics are functioning correctly.
Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.
IMPORTANT:
Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referenced in this service information for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls for diagnosis.
The column labeled Data List indicates where a parameter is located on the scan tool. Review the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:
- All
-
The Parameter is in all data lists indicated below.
- Eng 1
-
Engine Data 1
- Eng 2
-
Engine Data 2
- EVAP
-
EVAP Data
- FT
-
Fuel Trim Data
- HO2S
-
HO2S Data
- MF
-
Misfire Data
- TAC
-
TAC Data
- CMP
-
CMP Actuator Data
- ODM
-
ODM Data
- IM
-
I/M Data
- FF
-
Freeze Frame Data
- FR
-
Failure Records Data
Scan Tool Data List
| Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
| Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off | |||
| A/C Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| A/C Relay Command | Eng 1, 2, MF | On/Off | Off |
| APP Indicated Angle | Eng 1, 2, CMP, EVAP, HO2S, FT, TAC | 0-100% | 0% |
| APP Sensor 1 | TAC | 0.9-4.5 Volts | 1 Volt |
| APP Sensor 2 | TAC | 0.40-2.25 Volts | 0.4 Volt |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
| BARO | Eng 1, 2, CMP, EVAP, HO2S, FT, MF, TAC | 65-104 kPa (8-16 psi) | Varies with altitude |
| BARO | Eng 2, TAC | Volts | Varies |
| Calculated ECT - Closed Loop Fuel Control | Eng 2 | -39°C to +40°C (-38°F to +104°F) | 40°C (104°F) |
| Calculated ECT - Thermostat Diagnosis | Eng 2 | -39°C to +140°C (-38°F to +284°F) | 89°C (192°F) |
| Catalytic Converter Protection Active | FT, MF | Yes/No | No |
| Catalyst Monitor Complete This Ignition | IM | Yes/No | Varies |
| Catalyst Monitor Enabled this Ignition | IM | Yes/No | Varies |
| CKP Resync Counter | Eng 2, MF | Counts | 0 Counts |
| Component Monitor Complete This Ignition | IM | Yes/No | Varies |
| Component Monitor Enable This Ignition | IM | Yes/No | Varies |
| Current Gear | Eng 1, 2, MF | P/N/Reverse/1st-5th | P/N |
| Cycles of Misfire Data | MF | 0-200 counts | Varies |
| Cylinder 1-6 Injector Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| Cylinder 1-6 Knock Retard | Eng 1 | Degree | 0 Degrees |
| Decel. Fuel Cutoff | Eng 2, FT, HO2S | Active/Inactive | Inactive |
| Desired Exh. CMP Bank 1 or 2 | CMP | Degree | Varies |
| Desired HO2S 1 | HO2S | Lambda | Varies |
| Desired Idle Speed | Eng 1, 2, EVAP, CMP, TAC | 0-7,000 RPM | 650 RPM |
| Desired Int. CMP Bank 1 or 2 | CMP | Degrees | Varies |
| DTC Set This Ignition | Eng 1, CMP, EVAP, FT, HO2S, TAC | Yes/No | No |
| EC Ignition Relay Command | Eng 1, TAC | On/Off | On |
| EC Ignition Relay Feedback Signal | Eng 1, TAC | 0-25.5 Volts | 12.0-14.5 Volts |
| ECM Reset | Eng 1, EVAP, FT | Yes/No | No |
| ECT Sensor | Eng 1, 2, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC | -39°C to +140°C (-38°F to +284°F) | Varies |
| Engine Load | Eng 1, 2, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC | 0-99% | 0-5% - Idle 3-7% - 2500 RPM |
| Engine OFF EVAP Test Conditions Met | EVAP | Yes/No | Varies |
| Engine Off Time | EVAP | 0:00:00 Seconds | Varies |
| Engine Oil Level Switch | CMP | OK/Low | OK |
| Engine Oil Life Remaining | CMP | % | Varies |
| Engine Oil Pressure Sensor | MF, CMP | kPa/psi | Varies |
| Engine Run Time | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, ODM | 0:00:00 | Varies |
| Engine Speed | ALL | RPM | 575-700 RPM |
| EVAP Monitor Complete This Ignition | IM | Yes/No | Varies |
| EVAP Monitor Enabled This Ignition | IM | Yes/No | Varies |
| EVAP Purge Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| EVAP Purge Solenoid Command | Eng 1, EVAP, FT | 0-100% | Varies |
| EVAP Vent Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| EVAP Vent Solenoid Command | Eng 1, EVAP, FT | Venting/Not Venting | Venting |
| Exh. CMP Angle Bank 1 or 2 | CMP | Degrees | Varies |
| Exh. CMP Bank 1 or 2 Command | CMP | 0-99% | Varies |
| Exh. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| FC Relay 1 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| FC Relay 1 Command | Eng 2 | ON/OFF | Varies |
| FC Relay 2 and 3 Command | Eng 2 | ON/OFF | Varies |
| FC Relay 2 and 3 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| Fuel Level Sensor | EVAP | 0-5 Volts | Varies |
| Fuel Pump Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| Fuel Pump Relay Command | Eng 1, 2 | On/Off | On |
| Fuel Tank Level Remaining | Eng 1, EVAP, MF | Liter/Gallon | Varies |
| Fuel Tank Pressure Sensor | EVAP | in H2O/mm Hg | Varies |
| Fuel Tank Pressure Sensor | EVAP | 0-5 Volts | Varies |
| Fuel Tank Rated Capacity | EVAP | Liter/Gallon | 17.8 Gallons (67.3 Liters) |
| Fuel Trim Learn | Eng 1, EVAP, FT, HO2S | Enabled/Disabled | Enabled |
| HO2S 1 | Eng 1, EVAP, FT, HO2S | Lambda | 1.0 Lambda |
| HO2S 2 | Eng 1, FT, HO2S | 0-1,006 mV | Varies 400-700 mV |
| HO2S Heater Monitor Complete This Ignition | IM | Yes/No | Varies |
| HO2S Heater Monitor Enabled This Ignition | IM | Yes/No | Varies |
| HO2S 1 or 2 Heater Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| HO2S 1 or 2 Heater Command | HO2S | 0-99% | Varies |
| HO2S/O2S Monitor Complete This Ignition | IM | Yes/No | Varies |
| HO2S/O2S Monitor Enabled This Ignition | IM | Yes/No | Varies |
| HO2S 1 or 2 Sensing Element | HO2S | Ohms | 70-90 Ohms Depends on Temperature |
| IAT Sensor | Eng 1, 2, EVAP, FT, FF, FR, HO2S, TAC, CMP | -39° to +140°C (-38° to +284°F) | Varies |
| Ignition 0 Signal | Eng 1, 2, EVAP, TAC | On/Off | On |
| Ignition 1 Signal | Eng 1, 2, EVAP, FT, MF, TAC, CMP | On/Off | On |
| IMRC Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| IMRC Solenoid Command | Eng 1 | On/Off | Off |
| Initial Brake Apply Signal | TAC | Applied/Released | Released |
| Injector 1-6 Command | Eng 2, FT, MF | ms | Varies |
| Injector PWM Bank 1 or 2 Average | FT, MF | 0-9 ms | 4.6-5.4 ms |
| Int. CMP Angle Bank 1 or 2 | CMP | Degrees | Varies |
| Int. CMP Bank 1 or 2 Command | CMP | 0-99% | Varies |
| Int. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| Knock Retard | Eng 1 | Degrees | Varies |
| KS 1 or 2 Signal | Eng 1 | Volts | Varies |
| Loop Status Sensor 1 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Closed Loop |
| Loop Status Sensor 2 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Open Loop |
| LT FT Cruise/Accel. | Eng 1, 2, EVAP, FT, HO2S | -100% to +100% | 0% |
| LT FT Idle/Decel. | Eng 1, 2, EVAP, FT, HO2S | -100% to +100% | 0% |
| MAF Sensor | Eng 1, 2, FT, HO2S, MF, TAC, CMP, FF, FR | 0-655 g/s | 3.4-6.3 g/s |
| MAF Sensor | Eng 2, EVAP, FT, HO2S, MF, TAC, CMP | 0-5 Volts | 0.9-1.7 Volts |
| MIL Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| MIL Command | Eng 1 | On/Off | Off |
| Mileage Since DTC Cleared | Eng 2, FF, FR | km - miles | Varies |
| Mileage Since First Failure | FF, FR | km - miles | Varies |
| Mileage Since Last Failure | FF, FR | km - miles | Varies |
| Mileage Since MIL Requested | FF, FR | km - miles | Varies |
| Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0 |
| Misfire History Cyl. 1-6 | MF | 0-65,535 Counts | 0 |
| Misfire Monitor Complete This Ignition | IM | Yes/No | Varies |
| PNP Switch | Eng 2 | Park/Neutral/In Gear | P/N |
| Power Enrichment | Eng 2, FT, HO2S, MF | Active/Inactive | Inactive |
| Reduced Engine Power | Eng 1, 2, TAC | Active/Inactive | Inactive |
| Short Term FT | Eng 1, 2, EVAP, FT, HO2S, FF, FR | -25% to +25% | -3% to +3% |
| Spark | Eng 1, 2, FT, HO2S, MF, FF, FR | -20 to +40 Degrees | 2-10 Degrees |
| Starter Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
| Start Up ECT | Eng 2, EVAP, FT, HO2S | -39° to +140°C (-38° to +284°F) | Varies |
| Start Up IAT | Eng 2, EVAP, FT, HO2S | -39° to +140°C (-38° to +284°F) | Varies |
| Stoplamp Pedal Switch | Eng 1, TAC | Applied/Released | Released |
| System Power Mode | Eng 2, EVAP, TAC | Off, Accessory, RAP, Run, or Crank Request | Run |
| TAC System Learned Counts | TAC | 0-11 Counts | 0 |
| Torque Delivered Signal | FT, TAC | 0-100% | Varies |
| Torque Request Signal | FT, TAC | 0-100% | 90-98% |
| Total Fuel Trim Average | EVAP, FT, HO2S | -100 to +100% | Varies |
| Total Misfire Count | MF | Counts | 0 |
| TP Desired Angle | Eng 1, 2, EVAP, TAC | 0-100% | Varies |
| TP Indicated Angle | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, FF, FR | 0-100% | Varies |
| TP Sensor 1 | TAC | 0-5 Volts | 0.5-0.8 Volts |
| TP Sensor 1 Learned Minimum | TAC | 0-5 Volts | 0-0.6 Volts |
| TP Sensor 2 | TAC | 0-5 Volts | 4.7-4.1 Volts |
| TP Sensor 2 Learned Minimum | TAC | 0-5 Volts | 5-3.7 Volts |
| TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
| Traction Control Status | TAC | Active/Inactive | Inactive |
| Transmission Gear Selector Signal | Eng 2 | Valid/Invalid | Valid |
| TWC Temperature Calculated | FT, MF | Temperature | Varies |
| Vehicle Security Status | Eng 2 | Password Learning, VTD Fail-Enable, Auto Learn Timer, Fuel Disable Until Ign Off, Fuel Disable Timeout, and Fuel Continue | Fuel Continued |
| Vehicle Speed Sensor | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, FF, FR | Km/h mph |
Varies |
| Volumetric Efficiency | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP | 0-100% | 5-25% - Idle and at 2,500 RPM |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.