Question about 1998 Nissan Maxima

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Service engine light is on getting code 1402

What does the code mean

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EGR valve.

service engine light is on getting code 1402 - 1_19_2013_8_28_50_pm.jpg

Posted on Jan 19, 2013

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This DTC (Diagnostic Trouble Code) is for the EGR (Exhaust Gas Recirculation) system. The EGR is used to reduce combustion chamber temperature and nox emissions. By recirculating exhaust into the combustion chamber the air/fuel mixture is diluted reducing the combustion temperature to avoid pinging, detonation and nox emissions.

Posted on Jan 19, 2013

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