Scan Tool Data List
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 properly.
Scan tool values from a properly running engine 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 running 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 can result in misdiagnosis and in unnecessary parts replacement.
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:
- AIR
-
AIR Data List
- ALL
-
Parameter is in All Data Lists
- EGR
-
EGR Data List
- ENG
-
Engine Data List
- EVAP
-
EVAP Data
- FT
-
Fuel Trim Data List
- HO2S
-
HO2S Data List
- IGN
-
Ignition Data List
- IND
-
Induction Data
- MF
-
Misfire Data List
- TAC
-
TAC Data List
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 | |||
| 5 volt Reference 1 | AIR, EGR, EVAP, IGN, IND, TAC | Volts | 4.5 |
| 5 volt Reference 1 Circuit Status | AIR | OK/Fault | OK |
| 5 volt Reference 2 | AIR, EGR, EVAP, IGN, IND, TAC | Volts | 4.5 |
| 5 volt Reference 2 Circuit Status | AIR | OK/Fault | OK |
| A/C Relay Command | AIR, EGR, ENG, IND, MF, TAC | On/Off | Off |
| Air Flow Calculated | AIR, ENG, EVAP, FT, HO2S, IND, MF, TAC | g/s | 3-7 |
| AIR Indicated Pressure | AIR | kPa/PSI | 0.0 |
| AIR Pressure Sensor | AIR | kPa/psi | Near BARO |
| AIR Pressure Sensor | AIR | Volts | 2.7 |
| AIR Pressure Sensor Variance | AIR | kPa/psi | 0.00 |
| AIR Pump Relay Circuit Status | AIR | OK, Incomplete, Short B+, Short Gnd/Open | OK/Incomplete |
| AIR Pump Relay Command | AIR | ON/OFF | OFF |
| AIR Solenoid Circuit Status | AIR | OK, Incomplete, Short B+, Short Gnd/Open | OK/Incomplete |
| AIR Solenoid Command | AIR | ON/OFF | OFF |
| Ambient Air Temperature | ENG | C/F | Varies |
| APP Indicated Angle | ALL | 0-100% | 0 |
| APP Sensor | TAC | Volts | 0.0 |
| APP Sensor 1 | TAC | 0.9-4.5 Volts | 0.90 |
| APP Sensor 1 Indicated Position | TAC | % | 0.0 |
| APP Sensor 2 | TAC | 0.42-2.25 Volts | 0.43 |
| APP Sensor 2 Indicated Position | TAC | % | 0.0 |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
| BARO | AIR, EGR, ENG, EVAP, FT, HO2S, IGN, IND | 65-104 kPa | Varies with altitude |
| BPP Circuit Signal | TAC | Applied/Released | Released |
| BPP Signal | ENG, TAC | Applied/Released/Invalid | Released |
| Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
| Calc. TWC Temp. | FT, MF | °C/°F | Varies |
| CKP Active Counter | IGN | Counts | Incrementing |
| CKP Resync Counter | IGN | Counts | Varies |
| CKP Sensor | IGN | RPM | Engine Idle Speed |
| CMP Active Counter | IGN | Counts | Incrementing |
| CMP Sensor | IGN, MF | RPM | Engine Idle Speed |
| Cold Startup | AIR, EVAP | YES/NO | Varies |
| Commanded A/F Equivalence Ratio | ENG | - | 1 |
| Cruise Control Active | TAC | Yes/No | No |
| Cycles of Misfire Data | MF | 0-99 | Incrementing |
| Cylinder 1-8 Circuit Status | MF | OK, Incomplete, Short B+, Short Gnd/Open | OK |
| Cylinder 1-8 Injector Circuit Status | MF | Fault/OK | OK |
| Decel. Fuel Cutoff | EGR, ENG, FT, HO2S | Active/Inactive | Inactive |
| Desired EGR Position | EGR | % | 0 |
| Desired Idle Speed | EVAP, IND, TAC | RPM | 650 |
| Distance Since DTC Cleared | ENG | Miles/Kilometers | Varies |
| EC Ignition Relay Circuit Status | TAC | OK, Incomplete, Short B+, Short Gnd/Open | OK/Incomplete |
| EC Ignition Relay Command | ENG, TAC | On/Off | On |
| EC Ignition Relay Feedback Signal | ENG, TAC | Volts | Battery Voltage |
| ECT Sensor | ALL | -39 to +140°C/-38 to +284°F | 85-105°C/185-220°F |
| EGR Flow Test Count | EGR | Counts | 1 |
| EGR Learned Minimum Position | EGR | Volts | 0.57 |
| EGR Position Sensor | EGR, FT, IND, MF | % | 0 |
| EGR Position Sensor | EGR | Volts | 0.57 |
| EGR Position Variance | EGR | % | - |
| EGR Solenoid Circuit Status | EGR | OK, Incomplete, Short B+, Short Gnd/Open | OK/Incomplete |
| EGR Solenoid Command | EGR | % | 0 |
| Engine Load | ALL | % | 25 |
| Engine Oil Level Switch | ENG | OK/Low | OK |
| Engine Oil Life Remaining | IPC | % | Varies |
| Engine Oil Pressure Switch | MF | OK/Low | OK |
| Engine Run Time | ALL | 0:00:00 | Varies |
| Engine Speed | AIR, EGR, ENG, EVAP, FT, HO2S, IGN, MF, TAC | RPM | 650 |
| EVAP Fault History | EVAP | Fault/No Fault | No Fault |
| EVAP Purge Solenoid Command | ENG, EVAP, FT, HO2S | % | Varies |
| EVAP Purge Solenoid Circuit Status | EVAP | OK/Short B+/Short Gen/Open/Incomplete | OK/Incomplete |
| EVAP Vent Solenoid Command | ENG, EVAP | Venting/Not Venting | Venting |
| EVAP Vent Solenoid Circuit Status | EVAP | OK/Short B+/Short Gnd/Open/Incomplete | OK/Incomplete |
| Ext. Travel BPP Signal | TAC | Applied/Released | Released |
| Fuel Level Sensor | EVAP | 0-5 Volts | Varies |
| Fuel Pump Relay Command | ENG | On/Off | On |
| Fuel Pump Relay Circuit Status | ENG | OK/Short B+/Short Gnd/Open | OK/Incomplete |
| Fuel Tank Level Remaining | ENG, EVAP, FT, MF | Gal/L | Varies |
| Fuel Tank Pressure Sensor | EVAP | Volts | 1.5 |
| Fuel Tank Pressure Sensor | ENG, EVAP | in H2O/mm Hg | 0.00 |
| Fuel Tank Rated Capacity | EVAP | Gal/L | 18.5/69.9 |
| Fuel Trim Cell | ENG, FT | Cell Number | 17 |
| Fuel Trim Learn | FT | Enabled/Disabled | Enabled |
| Fuel Trim System Test State | FT | Disabled, Enabled, Run Purge Test, Monitoring | Varies |
| Fuel Volatility | FT | Low/Moderate/High | Varies |
| HO2S Bank 1 or Bank 2 Sensor 1 | AIR, ENG, EVAP, FT, HO2S, IND | mV | 80-850 |
| HO2S Bank 1 Sensor 2 | ENG, FT, HO2S | mV | Varies 400-800 mV |
| HO2S Bank 1 or Bank 2 Sensor 1 Heater | HO2S | amps | 0.60-0.80 |
| HO2S Bank 1 Sensor 2 Heater | HO2S | amps | 0.60-0.80 |
| HO2S Bank 1 Sensor 1 Heater Circuit | HO2S | Incomplete, Short to gnd/Open, short to B+ | OK |
| HO2S Bank 1 Sensor 1 Heater Command | HO2S | % | 60-99 |
| HO2S Bank 1 Sensor 1 Heater Command | HO2S | ON/OFF | ON |
| HO2S Bank 1 Sensor 2 Heater Circuit | HO2S | Incomplete, Short to gnd/Open, short to B+ | OK |
| HO2S Bank 1 Sensor 2 Heater Command | HO2S | % | 60-99 |
| HO2S Bank 1 Sensor 2 Heater Command | HO2S | ON/OFF | ON |
| HO2S Bank 2 Sensor 1 Heater Circuit | HO2S | Incomplete, Short to gnd/Open, short to B+ | OK |
| HO2S Bank 2 Sensor 1 Heater Command | HO2S | % | 60-99 |
| HO2S Bank 2 Sensor 1 Heater Command | HO2S | ON/OFF | ON |
| Hot Open Loop | HO2S, FT | Active/Inactive | Inactive |
| IAT Sensor | ALL | -39 to +140°C/-38 to +284°F | Varies |
| Ignition Accessory Signal | ENG, TAC | ON/OFF | OFF |
| Ignition 1 Signal | ALL | Volts | Battery Voltage |
| Injector PWM Bank 1 or Bank 2 | ENG, FT, HO2S, MF | ms | 2.0-5.4 |
| Injector 1-8 Disabled Due To Misfire | MF | Yes/No | No |
| Intake Manifold Pressure | FT, IND | kPa | 70-75 |
| Knock Detected Cyl.1-8 | IGN | YES/NO | NO |
| Knock Retard | EGR, IGN | 0-191 Degrees | 0 |
| Long Term FT Bank 1 or Bank 2 | AIR, ENG, EVAP, FT, HO2S, | -100 to +100% | 0% ± 10% |
| LT FT Test Avg. Bank 1 or Bank 2 | FT | % | 1% |
| LT FT Avg. Bank 1 or Bank 2 w/o purge | FT | % | 1% |
| Loop Status | AIR, ENG, EVAP, FT, HO2S | Open/Closed | Closed |
| MAF Performance Test | FT, TAC | OK/Fault | OK |
| MAF Sensor | ALL | g/s | 3-7 |
| MAF Sensor | IND | Hz | 2800 |
| MAP Performance Test 1 | FT, IND, TAC | OK/Fault | OK |
| MAP Performance Test 2 | FT, IND, TAC | OK/Fault | OK |
| MAP Sensor | AIR, EGR, ENG, EVAP, FT, HO2S, IGN, IND, MF, TAC | kPa | 30 kPa |
| MAP Sensor | IND | Volts | 0.95-1.06 |
| MIL Circuit Status | ENG | OK/Incomplete/Short B+/Short Gnd/Open | OK/Incomplete |
| MIL Command | ENG | On/Off | Off |
| MIL Requested by DTC | AIR, EGR, EVAP, FT, HO2S, IGN, IND, MF, TAC | Yes/No | No |
| Misfire Current Cyl.1-8 | MF | 0-255 Counts | 0 |
| Misfire History Cyl. 1-8 | MF | 0-255 Counts | 0 |
| PNP Switch | ENG | P/N Yes/No in gear | P/N |
| Power Enrichment | ENG, FT, HO2S, MF | Active/Inactive | Inactive |
| Reduced Engine Power | TAC | Active/Inactive | Inactive |
| Short Term FT Bank 1 or Bank 2 | AIR, ENG, EVAP, FT, HO2S | -100 to +100% | 0% ± 10% |
| Spark | ENG, FT, HO2S, IGN, IND, MF, | ° | 9-11 |
| Start Up ECT | AIR, EVAP, HO2S | -39 to +140°C/-38 to +284°F | Varies |
| Start Up IAT | AIR, EVAP, HO2S | -39 to +140°C/-38 to +284°F | Varies |
| ST FT Test Avg. Bank 1 or Bank 2 | FT | % | 1 |
| TAC Forced Engine Shutdown | TAC | YES/NO | NO |
| TAC Motor | TAC | Enabled/Disabled | Enabled |
| TAC Motor Command | TAC | % | 25 |
| TCS Torque Request Signal | TAC | Nm/lb ft | 3/2 |
| TCS Torque Request Signal | TAC | % | 5 |
| Torque Delivered Signal | TAC | % | 1 |
| Torque Management Spark Retard | IGN | ° | 0 |
| Total Knock Retard | IGN | ° | 0 |
| Total Misfire | MF | Counts | 0 |
| TP Desired Angle | TAC | % | 2 |
| TP Indicated Angle | AIR, EGR, ENG, EVAP, FT, HO2S, IGN, MF, TAC | 0-99% | 2-3 |
| TP Performance Test | IND, TAC, FT | OK/Fault | OK |
| TP Sensor 1 Learned Min | TAC | Volts | Varies |
| TP Sensor 2 Learned Min | TAC | Volts | Varies |
| TP Sensor 1 | TAC | Volts | 4.1-4.5 |
| TP Sensor 1 Indicated Position | TAC | % | 2 % |
| TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
| TP Sensor 2 | TAC | Volts | 0.5-0.8 |
| TP Sensor 2 Indicated Position | TAC | % | 2 % |
| Vehicle Speed Sensor | ALL | km/mi | 0 |
| Warm-ups Since DTC Cleared | ENG | Counts | Varies |
| Warm-ups w/o Emission Faults | ENG | Counts | 0 |
| Warm-ups w/o Non-emission Faults | ENG | Counts | 0 |
| Wide Open Throttle | TAC | YES/NO | NO |