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Check engine light still on after replacing upstream oxygen sensor....tried erasing the codes but checked engine light is still on.
Vehicle: 2008 Honda accord Ex sedan 4cyl 2.4 l

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Hi there,

The code P0135 indicates an issue with the heated O2 sensor. Here is a list of possible causes.

P0135 HONDA - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Read more: https://www.autocodes.com/p0135_honda.html

The code P0498 indicates an issue with the EVAP system canister vent. Here is a list of possible causes.

P0498 HONDA - Evaporative Emission System Canister Vent Shut Valve Control Circuit Low Voltage

Read more: https://www.autocodes.com/p0498_honda.html

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