diagnostic trouble codes
When a car’s computer notices something wrong, it gives the problem a code. These codes tell mechanics what part might need fixing.
Diagnostic trouble codes (DTCs) are alphanumeric codes generated by a vehicle’s onboard computer when it detects a fault. They help mechanics identify which system or component is malfunctioning.
Hear It Discussed
"There's different protocols. There's even in the same cars with OBD-2, you have to put in the year first and sometimes the make and model so it knows what protocol of OBD-2 it's using to try to..."
The Motor Medics Helping People to Repair Their Cars Over The Phone Under The Hood show
"They said, during the startup attempt, diagnostic trouble codes indicated cylinder misfires prompting me to order replacement fuel injectors."
Car Pro Radio Show July 18 26 Hour 2 CarPro Radio Show
"A lot of them read [1623.0s] the codes and then they go and see what the parts are recommended or a possibility yep, and they start changing parts."
Ron Ananian, The Car Doctor - July 11, 2026 Hour 1 - The Double Whammy Jeep Air Conditioning Ron Ananian The Car Doctor
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Episodes Mentioning "diagnostic trouble codes"
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The Motor Medics Helping People to Repair Their Cars Over The Phone
Under The Hood show
Car Pro Radio Show July 18 26 Hour 2
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Ron Ananian, The Car Doctor - July 11, 2026 Hour 1 - The Double Whammy Jeep Air Conditioning
Ron Ananian The Car Doctor
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