Q: Code p0505

asked by on

My car has a cel on with code p0505. I tried replacing Iac valve. But the code is still keep coming. So then could be the problem with it?

My car has 120000 miles.
My car has an automatic transmission.

For the P0505 code, you should make sure that the PCV valve is clean or you should have the valve replaced. The throttle idle valve should be removed and throttle plates and IAC passages cleaned out. Make sure there is not vacuum leaks or problems from the MAF to the throttle body. Clear codes, disconnect battery for 10 minutes and then reconnect and have the computer relearn the idle speeds. If the trouble persists, have an expert come and diagnose the Check Engine Light more thoroughly. From there, they will be able to move forward with the appropriate 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

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: Q: My check engine light is on

A vehicle that has a problem with the engine or power train can turn on the check engine light and set a code in the computer. The list of possible codes and problems are in the hundreds. You will need...

Q: Q: Car won't accelerate after 10 miles

Hello. It is more likely that the cause of this problem is that the catalytic converter is clogged which would cause the car to not to accelerate once becoming warm. There could also be a problem with the transmission. Your...

Q: 2006 Toyota Matrix fuel pump plastic lock ring stuck. Universal removal tool is crap. Help. Frustrated.

Many times there is what is called a spanner wrench that is used to remove fuel pump lock rings. If you are unable to get one of those, a hammer and chisel is your next best option. You could also...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.