DTC P0135 and P0498

For 135 code you must do idle relearn after replacing part and erasing code in computer. Also check fuse 11 and relay in picture under hood fuse box. For 498 code check resistance in valve if between 25-30 ohms on valve then there is a short between ecm and valve or wires. Valve is under left hand floor.

DTC P0135 refers to a problem with the O2 (oxygen) sensor circuit. This code indicates that the O2 sensor in Bank 1 Sensor 1 is not functioning properly. The O2 sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel ratio. A faulty O2 sensor can cause the engine to run poorly, decrease fuel economy, and increase emissions. To fix this problem, the O2 sensor in Bank 1 Sensor 1 may need to be replaced.

DTC P0498 refers to a problem with the evaporative emissions (EVAP) system. This code indicates that there is a malfunction in the vent valve solenoid circuit. The vent valve is responsible for controlling the flow of vapors from the fuel tank to the charcoal canister. A malfunctioning vent valve can cause the fuel tank to become over-pressurized, which can cause problems with the fuel system and emissions. To fix this problem, the vent valve solenoid may need to be replaced or the circuit inspected for faults.

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