Q: Code reader not working.

asked by on

The code reader won't connect to my port and turn on so that it can be read. The fuses have already been checked.

Hi, issues with the data link connector are common. Most of the time a bad fuse is the culprit. If you have verified the fuse is good, there are other things you can visually inspect before seeking the help of a technician. Have you ever noticed all the indicator lights on your dash come on when you initially turn your key? That is called a bulb check. Believe it or not, the bulb on your "Check Engine light" is part of the circuit from your data link connector to your cars computer. If the bulb is not working for some reason the connector will not work either. So next time you go to start your car, see if that light is coming on. If it’s not, you can give the technician a heads up. If it is coming on the issue may be more complex like a faulty computer. In either case, I would recommend seeking help from a technician for a proper diagnosis.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Code reader not working.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car not starting after radiator hose blew off

There may be a number of reasons that may cause the car not to start that may be connected to the radiator hose blowing off. If the hose blew off while driving, this suggests the car may have been overheating...

Q: Car won't start after new battery

Hi Kathia. In situations like you are describing, there are most likely multiple issues that combined together are causing this problem. Although the battery is vital to start the vehicle and power accessories when the engine is not started, once...

Q: Car overheating.

The starter and alternator are not related to your engines cooling system in any way. The overheating starting after these repair might be a coincidence, unless something was disconnected or damaged during the repair. Sometimes we as technicians disconnect or...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.