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P1421 Diagnostic Trouble Code Discussion for March 2015

Cold Start Emission Reduction Strategy Monitoring

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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
2009 Nissan Titan PRO-4X 5.6L Misfire VIN: 1N6BA07C89
P1421: Cold start control. Checked engine compression & found all cylinders between 165 &170 found compression gauge getting wet on right bank while checking compression vehicle burned 5 gallons of gas in 30 minutes in stall found a massive exhaust leak on right exhaust manifold...
March 17, 2015