> This trouble code indicates an issue with the evaporative emission (EVAP) control system. The EVAP system prevents fuel vapor from escaping into the atmosphere by storing it in a charcoal canister. When the engine is running, the canister is purged and the fuel vapor is sent to the engine to be burned.
>A P0455 trouble code could be caused by a leak in the EVAP system, a faulty canister, or a problem with the purge valve. Common symptoms include the check engine light coming on, a strong fuel smell, and poor gas mileage.
P0325
>This trouble code indicates a problem with the knock sensor circuit. The knock sensor is responsible for detecting engine knocking and adjusting the engine timing to prevent it. A P0325 code could be caused by a faulty knock sensor, a wiring issue, or a problem with the engine control module (ECM).
>Symptoms of a P0325 code can include engine knocking, pinging, or rattling, reduced engine performance, and increased fuel consumption.
Here are some possible causes of these trouble codes:
- Leaking or damaged fuel tank or lines
- Faulty evaporative emission control system vapor pressure sensor/switch
- Faulty canister purge valve
- Damaged wiring or connectors
- Faulty engine control module (ECM)
- Engine knocking due to worn or damaged engine bearings, piston rings, or crankshaft
- Faulty knock sensor
- Incorrect ignition timing
It's important to have these trouble codes diagnosed and repaired as soon as possible to prevent engine damage and further problems.
