what is the maning this code, po420 .

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my engine light is on is po420 or po171

Dec 21, 2010

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What are the best Honda repair shops?

RepairPal Certified shops can diagnose and repair your 1996 Honda Civic. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

what is the maning this code, po420 .

What is your question?

my engine light is on is po420 or po171

kwame oduro in Sycamore IL

Dec 21, 2010

1 Reply

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DaveJMon Dec 21, 2010

P0420 indicates that there is a concern with the catalytic converter's efficiency. P0171 means that the oxygen sensor is reading a lean fuel situation. Both codes should be diagnosed to determine what the problem is with fuel and air controls.

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Popular Answer

What are the best Honda repair shops?

RepairPal Certified shops can diagnose and repair your 1996 Honda Civic. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.