There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
In a 1997 Ford F-250 *** LIGHT DUTY *** (YES , the 4.2 liter V6 engine was available )
With an OBD2 scan tool.
usually a problem in the emission control system - have vehicle scanned to determine the problem
After repairing the cause of the code, you can clear it with a scan tool.
6 quarts ( 5.7 liters ) WITH ENGINE OIL FILTER CHANGE - according to the 1997 Ford F-250 light duty owners manual for the 5.4 L - V8 engine
What year F250 and what engine??
It means you need to check the engine over, something is wrong.
6.0 gallons
According to the 1997 Ford F-250 Light Duty Owner Guide : With engine oil filter change : The 5.4 liter V8 engine takes ( 6.0 U.S. quarts )
Check the Vehicle Emission Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
being a super duty i assume this is a diesel engine. diesel trucks have 2 batteries. did you check both batteries. then check all fuses if it is a diesel engine there will be 2 batteries .did you check both batteries
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