• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each of the diagnostic category. |
This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The control module seals the EVAP system by commanding the EVAP canister purge solenoid valve OFF and the EVAP canister vent solenoid valve ON. The control module monitors the fuel tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is more than a predetermined value within a predetermined time, this DTC sets. The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent solenoid valves.
Control Module Command | EVAP Canister Purge Solenoid Valve | EVAP Canister Vent Solenoid Valve |
---|---|---|
ON | Open | Closed |
OFF | Closed | Open |
• | DTCs P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0125, P0442, P0446, P0452, P0453, P0502, P0601, P0602, P0606, P0641 are not set. |
• | The ignition voltage is between 10-18 volts. |
• | The barometric pressure (BARO) is more than 74 kPa. |
• | The fuel level is between 15-85 percent. |
• | The engine coolant temperature (ECT) is between 4-30°C (39-86°F). |
• | The intake air temperature (IAT) is between 4-30°C (39-86°F). |
• | The start-up ECT and IAT are within 8°C (14.4°F) of each other. |
• | The vehicle speed sensor (VSS) is less than 121 km/h (75 mph). |
• | DTC P0496 runs once per cold start for 90 seconds. |
• | The control module detects vacuum during a non-purge condition. |
• | The fuel tank vacuum is greater than 10 inches H2O for 5 seconds within 90 seconds of cold start. |
DTC P0496 is a Type B DTC.
DTC P0496 is a Type B DTC.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
⇒ | If the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the EVAP canister purge solenoid valve. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Evaporative Emission Canister Purge Solenoid Valve Replacement