Q: Multiple warning lights but car runs fine

asked by on

I recently had the 02 sensor and engine management sensor replaced. But having several things happening. The engine light is on, the message board reads ‘cruise control not available,’ a red light appears and reads ‘engine temperature too high,’ arrows go cold/hot back and forth. The car feels fine and runs fine. These warning messages are all that I can see are happening. What does all this mean?

Hello. You may have different problems occurring here. Since the Check Engine Light is on, I would scan the computer for codes first. The codes will give me a good idea of where to start with the diagnosis. Due to the other symptoms you are having, I would begin by thinking that there is an issue with the coolant temperature sensor or the circuit for it. This will cause the erratic temperature readings and even the Check Engine Light. I would not replace anything without scanning the computer first. If you need to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your Check Engine Light and perform any needed 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. Multiple warning lights but car runs fine

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: Hi my steering light is on but I know that my battery is not functioning properly. Can the malfunction battery affect the steering

Hello. If there is a voltage issue going on within the vehicle, then that can affect the function of the power steering. I would usually start by making sure that the engine drive belt is intact and tight. If it...

Q: My Check Engine Light came on. I fixed the issue, but the light quickly came back on. Will it turn itself off?

Just because a code is displayed does not mean that part is bad in all cases. The code is used as a tool to diagnose the problem. You may have to have the code diagnosed by an experienced mechanic like...

Q: Q: My car starts and then dies.

Hi there. Try unplugging the new throttle position sensor (TPS) and see if the engine runs normal and does not stall out. If so, then check the idle air control valve (IAC) and see if its functioning. The IAC could...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...