Q: Check Engine light on. Would the computer give all error codes in one shot? How do we know the engine's condition?

asked by on

Hi, I bought an 05 Kia Sedona having 57k miles, Seller (Tom) posted this one in craigslist, I checked carfax for this van, there are 5 previous owners and it seemed van was not used last 2 years. after I bought CV Shaft assembly on driver side have to be replaced in two weeks, due to huge noise coming on driver side. After I did this repair Check Engine light on, giving the code for Throttle position sensor. Then I doubted the engine and opened engine cover. Found a 2003 kia sedona engine written on it, no indication of how many miles on that engine, seems like he got this engine from junk yard. Seller is not responding to my calls or messages. I am wondering if I replace this sensor, would this engine be giving another error code for something else! I would like to know if there is any problem(s) with engine, would computer gives all error codes in one shot or it will give one after the other after each fix? I would like to know if it is possible to know condition of the engine.

My car has 57000 miles.
My car has an automatic transmission.

Hi there. From the description you have provided, I’m am inclined to agree with your assessment of a used engine being installed in your vehicle. An inspection of the engine, by a qualified technician could determine whether the engine is sound. The Check Engine Light on and having a TPS (throttle position sensor) code does not necessarily mean the sensor is at fault. Circuit tests should be performed to confirm the fault. The likelihood of the ECM (electronic control module/computer) giving you all the codes at once is remote. Other component failures could occur. Address those as they come up. Even though you already made the purchase, I recommend having your vehicle inspected by a certified technician so that you can get a thorough evaluation of the car’s true condition.

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. Check Engine light on. Would the computer give all error codes in one shot? How do we know the engine's condition?

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: I already agreed with an owner of 2008 limited edition v6 Prado. Average fuel consumption and mileage are different

Hey there. The fuel usage of 26L per 100km sounds like it is using too much fuel, or there is a problem with the display. I would suggest having a mechanic inspect the car first before you decide to purchase...

Q: Replacement engine running rough.

An engine that sounds like marbles running in a dryer is a classic description of pinging or pre-detonation, this is a sign of major engine malfunction. This in addition to the rough idle and stalling makes me wonder the quality...

Q: 86 GMC 305 quits firing occasionally

This car is very old. Personally, I'd just go and get a rebuilt distributor. Most companies sell the rebuilt distributors with the lifetime warranty. They don't cost that much. Replace your entire distributor assembly. If that doesn't fix it,...

Related articles

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...