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P0402 Fault Code on Ford T-Bird: Excessive Gas Recirculation - Is It EGR or DPFE?

Model: ford t-bird Fault Code: P0402 Posted: 2008-09-23 07:07

I recently encountered fault code P0402 on my Ford T-Bird, which indicates excessive gas recirculation. This code typically points to issues with the Exhaust Gas Recirculation (EGR) system or the Diesel Particulate Filter Efficiency (DPFE) sensor. I'm trying to determine whether the problem lies in the EGR valve or the DPFE sensor. Can anyone confirm the most likely cause based on common diagnostics for this model?

Related fault codes
P0402
Comments (1)
Anonymous 2008-09-23 08:29

The fault code P0402 is commonly associated with either a malfunctioning Exhaust Gas Recirculation (EGR) valve or an issue with the Diesel Particulate Filter Efficiency (DPFE) sensor. Both components are critical in regulating gas recirculation in Ford T-Bird vehicles, and a failure in either can trigger this code.