My2007 Ford 500 sets code P0642 car runs fine.

MELVINBROWN

MEMBER
2007 FORD FIVE HUNDRED
100,000 MILES

My2007 ford 500 sets code p0642 car runs fine when in heated garage once taken out into freezing temps will start to overfuel after about 10 minutes will eventually flood right out and will not restart untill put in heated garage code p0642 persists and o2 sensors show full rich after running up to full temp for a while o2 sensors clear

1 Reply

HMAC300

MECHANIC
48,601 POSTS

This cold beseveral of the following things and best to have a pro look at it.

This� pinpoint� test� is� intended� to� diagnose� the� following:

? Harness� circuits:� ETCREF, � ETCRTN, � SIGRTN� and� VREF
? Accelerator� pedal� position� (APP)� sensor� (9F836)
? Air� conditioning� pressure� (ACP)� transducer� sensor� (19D594)
? Differential� pressure� feedback� exhaust� gas� recirculation� (EGR)� sensor� (9J460)
? EGR� system� module� (ESM)� (9Y456)
? Fuel� rail� pressure� (FRP)� sensor� (6B288)
? Fuel� rail� pressure� temperature� (FRPT)� sensor� (9G756)
? Fuel� tank� pressure� (FTP)� sensor� (9C052)
? Manifold� absolute� pressure� (MAP)� sensor� (9F479)
? Power� steering� pressure� (PSP)� sensor� (3N824)
? Throttle� position� (TP)� sensor� (9B989)
? Powertrain� control� module� (PCM)� (12A650)

Fig.� 11:� Accelerator� Pedal� Position� (APP)� Sensor� Connector � A
Courtesy� of� FORD� MOTOR� CO.
It can also be something hooked up wrong