The Acura Code P0498 is a common issue that is associated with the Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage. It is an issue that is detected by the Powertrain Control Module (PCM) when the return signal is OFF when the PCM outputs the ON signal to the EVAP canister vent shut valve. The execution time is continuous and the duration time is 5 seconds or more which leads to the DTC P0499 being not active. It is important to identify the causes of this issue in order to find the right solution.
Causes and Solutions of Acura Code P0498
| Causes | Solutions |
|---|---|
| Poor connections or loose terminals at the EVAP canister vent shut valve and the PCM | Replace the terminals or the connectors and check for any loose connections. |
| “Open” or “Short” in the wire between the EVAP canister vent shut valve and the PCM | Check and replace the wiring if necessary. |
| “Open” in the wire between the EVAP canister vent shut valve and the under-hood fuse/relay box (PGM-FI sub-relay) | Check and repair the wiring if necessary. |
| Faulty EVAP canister vent shut valve | Replace the defective EVAP canister vent shut valve. |
Poor Connections or Loose Terminals at the EVAP Canister Vent Shut Valve and the PCM
The Acura Code P0498 is commonly caused by poor connections or loose terminals at the EVAP canister vent shut valve and the PCM. This issue can be identified by the Powertrain Control Module (PCM) when the return signal is OFF when the PCM outputs the ON signal to the EVAP canister vent shut valve. To fix this issue, it is necessary to replace the terminals or the connectors and check for any loose connections.
Open or Short in the Wire between the EVAP Canister Vent Shut Valve and the PCM
Another possible cause of the Acura Code P0498 is an “open” or “short” in the wire between the EVAP canister vent shut valve and the PCM. In this case, it is important to check and replace the wiring if necessary.
Open in the Wire between the EVAP Canister Vent Shut Valve and the Under-hood Fuse/Relay Box (PGM-FI Sub-Relay)
The Acura Code P0498 can also be caused by an “open” in the wire between the EVAP canister vent shut valve and the under-hood fuse/relay box (PGM-FI sub-relay). Therefore, it is essential to check and repair the wiring if necessary.
Faulty EVAP Canister Vent Shut Valve
The last possible cause of the Acura Code P0498 is a faulty EVAP canister vent shut valve. If this is the case, the only solution is to replace the defective EVAP canister vent shut valve.
Conclusion
In conclusion, the Acura Code P0498 is a common issue that is associated with the Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage. This issue can be caused by poor connections or loose terminals at the EVAP canister vent shut valve and the PCM, an “open” or “short” in the wire between the EVAP canister vent shut valve and the PCM, an “open” in the wire between the EVAP canister vent shut valve and the under-hood fuse/relay box (PGM-FI sub-relay), or a faulty EVAP canister vent shut valve. To solve the Acura Code P0498, it is important to identify the cause and take the necessary corrective action.
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