Skip the auto shop - Our mechanics make house calls

Q: Codes not reading on car.

asked by on

My car will no longer start and the codes won't read.

A: If the onboard computer can't communica...

If the onboard computer can't communicate with your scan-tool it could be a few different problems, it could be that the on-board computer isn't getting the proper power or grounds, this would also explain the no-start. Have a certified mechanic take a look at it, it might only need a fuse or worse case a whole new power train control module (on-board computer).

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: What can you do to see how healthy a transmission is / how long it'll last? How much do these tests tell you?

Some of the tests that could be performed to determine if a transmission is in good condition would be to first check the fluid level as you mentioned. If the fluid level is low or the condition of the fluid...

Q: Where is the theft system located

The theft system of your vehicle is usually located in the steering column. This is due to the fact that the ignition switch is in this location and one of the major functions of the security system is to disable...

Q: Sensing and diagnostic module

If you are referring to the fuse that allows your OBD2 connector to be powered up, this would be a normal function of your vehicle. 4.9 volts sounds about right for something like that as well. The OBD2 connector is...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...