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Code 73 means the signal coming from the air temp sensor is too high. Could be the sensor or a short in the wiring.
You may need a shop manual to get the testing procedures.
Well, I would say that it means that SOMEBODY is confused!
Diagnostic Test Code (DTC) P0072 is defined by SAE J2012 as "Ambient Air Temperature Sensor Circuit Low"
DTC P0073 is defined as "Ambient Air Temperature Sensor Circuit High"
I do not know how the ambient air temperature sensor circuit could be faulted both HIGH and LOW at the same time.
The only thing I have ever seen cause something like this is when people try to install aftermarket "performance chips" on their vehicles which "lie" to the computer about what the ambient air temperature is.
CODE POO73- OUT SIDE AIR TEMPERATURE SENSOR CODE PO339- CRANKSHAFT POSITION SENSOR CIRCUIT INTERMITTENT. CODE PO335 -CRANKSHAFT POSITION SENSOR CIRCUIT MALFUNCTION.
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