Q: Car is idling at low speed my check engine light came on

asked by on

My car started idling at low speed at the same time the check engine light came on.

My car has 128716 miles.
My car has an automatic transmission.

Hi Johnny. There are several components that can cause a low engine idle, and trigger the check engine light from idle control valves, throttle body itself, fuel injectors, mass air flow sensor and more. The light itself is activated when an error code is created by a sensor that detects a fault with a system or individual part. A professional mechanic would begin the diagnostic process by downloading these error codes from the ECU and determining where the fault is coming from. Once they have a place to start, they manually complete an engine idle inspection to locate the exact source of this problem and recommend the right repairs.

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. Car is idling at low speed my check engine light came on

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: Truck wont start gives check engine light ran fine yesterday

Hi there. The Check Engine Light is a warning system that illuminates when an OBD-II error code is triggered. There are literally hundreds of possible reasons why the Check Engine will light up. In most cases, this is caused by...

Q: What antifreeze can I buy at Autozone that is suitable for my 2012 BMW 550i

Hello - yes, Pentosin NF is suitable for your BMW. Zerex G-05 coolant is also a low phosphate coolant suitable for newer BMWs with all-aluminum engines. For assistance, I recommend an cooling system flush performed by a mobile, professional mechanic,...

Q: My throttle body light is on and my car stalls sometimes.

Hi there. When the light comes on and causes the engine to stall out, the engine computer is making the engine go into a limp mode and a reduction of power at the same time. Check the throttle position sensor...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...