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I have a 2000 Ford Mustang and the engine light came on. Afriend checked it with his code reader and got codes 405, and 455. What does this mean?

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PO405 DPF EGR Sensor Circuit Low Voltage Detected
Differential Pressure Feedback--maybe a sensor

PO455 EVAP Control System Leak (No Purge Flow-Large Leak)

The 455 could be leaking hoses,other sensors and
about 12 things in the evap system

I would suggest a repair shop

One the knows what their doing and
has an EVAP Smoke Machine and surely
will need a scanner,unless they shotgun
every job,in that case don't go there

Posted on Mar 17, 2011


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