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Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 29991
Experience:  Automotive Repair Shop Manager, Technician
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Service engine indicator stays on, dont have scan tool, just

Customer Question

service engine indicator stays on
JA: Do you have the trouble code? Do you have a code reader or scan tool?
Customer: dont have scan tool, just had oil change and have cleaned the capless fuel door
JA: What is the model/year of your Ford?
Customer: 2013
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: have just had a oil change @ford dealership but didn't want to pay the $100. charge to run the diagnosis charge
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.
Category: Ford
Expert:  Eric replied 1 month ago.

HI,

the check engine light only comes on when the onboard computer detects a fault in either the engine management system, transmission, or emission control system. Faults can range from vacuum leak, engine misfire, transmission problem, emission control leak, one of dozens of engine or transmission sensors, or even internal engine or transmission failure. There are over 500 fault codes that can cause the check engine light to come on. And not every one has symptoms you can feel or see or hear.

The only way to determine which of the over 500 faults is responsible is to have the onboard computer read with a diagnostic scanner. once this is done and the fault code retreived then pinpoint diagnosis can be done and repair done.

without knowing which of the over 500 faults is responsible, it is simply impossible, as well as irresponsible for anyone to guess at to which one is responsible for the check light coming on.

Unless you live in California, you can run your car by any major parts store and they will retreive the fault code and definition for you for FREE. At that point, you can decide if this is something you can repair yourself or have a professional do the repair?.

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