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CHECK ENGINE LIGHT

Mark S.

New Member
Messages
11
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Location
Evergreen Park, IL, USA
#1
Check engine light came on, on way home from dealer. Not even 10 miles after my purchase. Called dealer next day said to bring it in will check it out. Brought it in they cleared the code said probably something from the factory. Came back on later that day. Back in the shop now. They don't know what is wrong could be something in the wiring they said they will probably have to call Ford engineering. Not sounding very promising. My Ford Pass says Alert Detail: Malfunction Indicator Lamp - Regulatory What is happening? Engine system has detected a fault. What should I do? Refer to OBD-II in the owners manual for information on temporary malfunctions that may not require service. Light Stays on: The vehicle may still be drivable and not require towing. Has anybody else had this issue? I put my OBD-II on and is says PENDING CODES P00 56 HO2S Heater Control Circuit Bank 2 Sensor 2 and P01 57 O2 sensor Circuit Low Voltage Bank 2 Sensor 2. PERMANENT CODES say the same thing. They said that that is not the problem. Any ideas?

Thanks,
Mark
 
Messages
26
Reactions
12
Location
Burlington, ON, Canada
#2
Sounds a lot like an O2 sensor has come unplugged since both the data circuit and the heater circuit are throwing codes. Either unplugged or the circuit is otherwise broken somehow, like a burnt-through wire or a cut wire or something similar. If it's sensor 2 it should be a downstream one if I'm not mistaken which means it's likely under the car. Not sure which side of this engine is bank 2.
 

Mark S.

New Member
Messages
11
Reactions
0
Location
Evergreen Park, IL, USA
#3
Sounds a lot like an O2 sensor has come unplugged since both the data circuit and the heater circuit are throwing codes. Either unplugged or the circuit is otherwise broken somehow, like a burnt-through wire or a cut wire or something similar. If it's sensor 2 it should be a downstream one if I'm not mistaken which means it's likely under the car. Not sure which side of this engine is bank 2.
Thanks for the info. I passed it on to the ford dealer. I will see what they find out and will update you on what it ends up being.
 
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