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Diagnostic Trouble Code: B1257
Diagnostic Trouble Code Name: Air temperature external sensor circuit short to ground
Vehicle Make: Ford
Vehicle Model: Falcon (FG)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
V8 Engine Ignition Coil 4 Primary/Secondary Circuit Failure.
Possible Mechanical Faults
Fouled spark plugs, incorrect spark plug gap, worn or damaged spark plugs, excessive carbon deposits on spark plugs, coil faulty or damaged
Possible Wiring Faults
Coil signal shorted to ground,Vehicle Power (VPWR) or Signal Return (SIGRTN),faulty or improper coil signalconnection, improper signal from Crankshaft Position Sensor (CKP) to PCM, wiring fault.
Possible Module Faults
Crankshaft Position Sensor (CKP) or reluctor (toothed wheel) faulty or damaged, faulty PCM
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