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2011 Honda Accord V6 Check Engine Light: P0138 and P0430 Fault Codes Explained

Model: 2011 Honda Accord V6 Fault Code: P0138 Posted: 2016-12-22 23:53

I'm experiencing persistent check engine light issues on my 2011 Honda Accord V6, with fault codes P0138 and P0430. After replacing all oxygen sensors, the warning light remains on. I'm concerned whether this is a common issue or if there's a deeper underlying problem that needs diagnosis. The vehicle has been serviced by various technicians, but no permanent fix has been found. I'd like to understand how these specific codes relate to engine performance and emissions systems, especially in V6 models of the 2011 Honda Accord.

Related fault codes
P0138P0430
Comments (2)
Anonymous 2016-12-22 23:56

Multiple oxygen sensor replacements have been performed on this 2011 Honda Accord V6, yet the check engine light persists. This suggests either a misdiagnosis or an underlying issue that requires further investigation beyond simple sensor replacement.

Anonymous 2016-12-23 08:32

I recommend starting with diagnosing and resolving the P0138 code first, as it relates to oxygen sensor performance in the exhaust system. Then address the P0430 code, which points to a catalytic converter issue or upstream/downstream sensor malfunction. Replacing all sensors at once may not be necessary—using a proper OBD2 scanner can help identify exact faults more efficiently and reduce unnecessary expenses. Always ensure that Honda OEM sensors are used for optimal compatibility and performance.