Q: It says service engine soon usually in the morning while warming up and goes out but does not come back on.

asked by on February 10, 2017

Service engine soon. Goes out but does not come back on while warming up.

My car has 83000 miles.
My car has an automatic transmission.

Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote

The check engine light should come on when you turn the key to the "on" position, but without starting or running the car. That function allows you to do a bulb check but also indicates that the PCM (computer) is in the circuit. Once you start the car, there should be no illumination of the check engine light. However, inasmuch as it has illuminated in your case, that likely means that diagnostic trouble codes have been stored. These codes should be downloaded and interpreted by a mechanic in order to resolve the underlying fault that is causing the light to come on. Consequently, your best option is to request a check engine light diagnostic. During such a diagnostic, a certified mechanic from YourMechanic would use a code scanner to retrieve the specific diagnostic trouble code(s) from your car’s PCM that have caused the check engine light to illuminate. Using those codes, the appropriate individual vehicle components or sub-systems (often a sensor, circuit, and the like) are tested to pinpoint the cause of the fault or the reason why the check engine light has illuminated. Once the faulty part or component is identified, it is explained to your satisfaction and the mechanic will let you know of the cost to repair. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help 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

Car shakes and the check engine light is on

Hello. If you have misfire codes on all of these cylinders, then the problem is much more in-depth. Most of the time when this occurs on one side of the engine, it is because the timing belt is worn out...

Check Engine light stays on

Hello. Without knowing the code and the problem that is occurring then it will be hard for me to give you good information. From what has been replaced though, I am assuming that this is an issue with the cooling...

Car still won't start even after replacing battery and checking fuses

If I am reading your symptom description correctly, the engine died at speed, the Check Engine light came on, and the engine now turns over but won't actually start despite a new battery. First item to check are the...

Engine shuts off while braking

Hello. If your vehicle has stalled, and will no longer turn over then it may possible that the alternator has failed. A faulty alternator will not be able to properly charge the battery. This will place a drain on the...

2013 Ford Edge engine light flashing

If your check engine light is flashing it is most likely an engine misfire that is causing it to blink on and off when it is misfiring. You will have to have the computer scanned for codes to see what...

Check engine light P0017ECT - 1998 Volvo S90

Hi there. There are a few different things that can cause this. Most of the time though, this is caused by an issue with the TCM or a power issue to the TCM. I usually start by testing the ignition...

Is it the part or a deeper problem when the camshaft position sensor error displays after replacement

As a technician, anytime two sensors fail at once, I suspect there is something that both these sensors have in common. This common item is the likely point of failure. It is unlikely that two sensors would fail at the...

My car is losing coolant from tailpipe

Hi there. According to what you've described, it does sound like your mechanic was correct; a blown head gasket. The radiator reservoir leak may have lead to the blown head gasket by causing a low coolant level, thus resulting in...

check engine light when headlights on.

The best thing to do is read the code that is being output by the ECM and that is causing the check engine light to come on. In 1981, of course, the number of codes output was very limited but...

Related articles

5 Warning Lights You Should Never Ignore
Car warning lights tell you something in your car needs attention. If you see the Check Engine Light or other warnings, get it inspected right away.
P0183 OBD-II Trouble Code: Fuel Temperature Sensor A Circuit High Input
P0183 code definition Fuel Temperature Sensor A Circuit High Input What the P0183 code means P0183 is a generic OBD-II code indicating...
P2251 OBD-II Trouble Code: O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1
P2251 P2251 code definition O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1 What the P2251 code means P2251 is an OBD-II generic code. The engine control module (ECM) monitors the negative current control of the O2 sensor heater...