Q: no spark fire no power to fuel pump computer won't communicate with code reader

asked by on

The computer won't communicate with code reader no spark fire to plugs the fuel pump has no power won't kick on
My car has an automatic transmission.

Hello, thanks for writing in. When dealing with this kind of situation, you need to start with the simplest options, and work your way down the list. When the electrical power supply is questioned, we need to rule out the battery, starter, and alternator first. Once we know we have a fully charged battery, the alternator will pass a bench test, and the starter is working we can turn to the ignition, or used those test results to take corrective action. If the ignition is allowing power from the battery to then go to the starter and the fuse box, then we need to make sure the fuse box is allowing power to pass to the separate systems. The goal is to trace the power supply to where it is loosing communication or connection. This kind of electrical testing is best done with a voltmeter and a wiring diagram. For more help resolving the issue, contact our service department to schedule an appointment.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. no spark fire no power to fuel pump computer won't communicate with code reader

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: Q: car wont start

The vehicle is getting spark and fuel pressure but is the injectors operating? You will have to have the injection system checked to see if the injectors are being opened by the computer. I have seen these cars get spark...

Q: My car has two error codes

Getting a hold of the OBD codes is definitely a great first step to diagnosing your Mitsubishi, but it must be noted that OBD codes are only a starting point, not a diagnosis. The codes P0401 and P0431 are actually...

Q: Q: Car is not starting and overheating

Hi there. Usually if the engine starts to overheat it won't damage your cylinder heads unless excessive overheating has occurred. However, if the engine overheated, coolant that may have spilled over may have caused an ignition system issue that's preventing...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.