Q: Check engine light spontaneously comes on
The check engine light on the instrument panel keeps spontaneously coming on. Soon after this warning light illuminates, my car started jerking forward. This happens at various speeds; I have not noticed any pattern to the speed. I went to an independent mechanic, but he could not duplicate the problem so he couldn't repair it. In your expertise, what is causing this problem?
Recommended Services
| Spark Plugs Replacement | $113.11 - $716.47 | Get a Quote |
| Check Engine Light is on Inspection | $94.99 - $114.99 | Get a Quote |
Hi there, thanks for writing in about your 2003 Geo Tracker. There are numerous potential causes for the problem you are having. It could be anything from a bad spark plug to a failed sensor. The only way to know for sure is to have the vehicle diagnosed while the it’s acting up and the Check Engine Light is on. This will allow for retrieval of the stored diagnostic trouble codes (DTCs). These codes serve as a starting point for any further diagnostics. If you need help, a qualified technician from YourMechanic can take a look at the car for you.
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・Fair and transparent pricing
What others are asking
What kind of maintenance should I perform on the battery?
Proper battery maintenance will ensure long battery life. A functioning battery is necessary to keep your vehicle running. But batteries can also be dangerous. Whenever you perform battery maintenance, make sure you take all of the necessary safety precautions. To...
What should I know about loading cargo and luggage on the roof luggage carrier?
If your car is equipped with a roof luggage carrier, you’ll find that it offers a significant amount of additional cargo space than what’s available in the cargo compartment alone. Of course, there are several things that you need to...
Headlights stay on
Hello. This sounds like the headlight switch is faulty. You might also want to check to make sure you have the headlight switch in either the auto position, or the off position. If the headlight switch is left in the...
Engine is running rough and P0401, P0171 and P0174 codes.
The first thing to check is to see if the EGR solenoid will release the vacuum when the electrical connector is disconnected. If it still doesn't release the vacuum then the solenoid should be replaced. The codes need to be...
No crank no start with new battery starter and ignition
This sounds like an electrical issue. Possible causes of the no crank no start are: the starter + solenoid battery cable brake switch neutral safety switch an open / short circuit A qualified technician such as one from YourMechanic will...
Car won't start - 2003 Volkswagen Passat
Hey there. Unless you've been experiencing other symptoms, it's probably not the fuel pump. But that's easy enough to determine by performing a fuel pressure test. A car that struggles to idle and then dies might have trouble with a...
My car goes into limp mode.
Hi there. The code C1130 (http://www.autocodes.com/c1130_nissan.html) that was cleared was either for the ECM (computer to the vehicle) or the ABS controller unit having a fault. The code p0101 (https://www.yourmechanic.com/article/-p0101-obd-ii-trouble-code-mass-airflow-maf-circuit-operating-range-or-performance-problem-by-john-nelson) if for the mass air flow sensor (MAF) is reoccurring...
Please make this quick, I have a misfire on cylinder 3 was told to change the ignition coil. What if my car runs extremely good.
Hi there. For the coolant light being on, check the coolant in the radiator and see if its low. If the fluid is low, then look around for any possible visible leaks (https://www.yourmechanic.com/services/oil-fluid-leak-inspection). If there is no coolant leaks, then...
I was told my steering angle sensor has a short in it. When ever I first start driving it will randomly lose power to the gas pedal.
Hi there. Use a diagnostic tool and check the data from the steering angle sensor. See if the steering angle changes and the wheel velocity is displayed when the steering wheel is moved. If no change, then the steering angle...
Related articles
P2147 OBD-II Trouble Code: Malfunction with the Fuel Injector Group A Supply Voltage Circuit Low
P2147 P2147 code definition P2147 is a generic OBD-II diagnostic trouble code indicating a malfunction with the fuel injector group A supply voltage circuit low. What the P2147 code means The P2147 code means than the fuel injector group A...
P0363 OBD-II Trouble Code: Misfire Detected - Fueling Disabled
P0363 P0363 code definition If the PCM has stored the P0363 code, it indicates that there has been a misfire in a cylinder, and that the PCM has disabled the fuel supply to the malfunctioning cylinder. What the P0363 code...
P0489 OBD-II Trouble Code: Exhaust Gas Recirculation “A” Control Circuit Low
P0489 means that the exhaust gas recirculation (EGR) “A” control circuit is reporting a low voltage flow due to faulty wiring or clogged EGR passages.
Browse other content
Cities
Maintenance
Services